CVE-2024-50085 (GCVE-0-2024-50085)
Vulnerability from cvelistv5 – Published: 2024-10-29 00:50 – Updated: 2026-08-05 11:41
VLAI
EPSS
VEX
Title
mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow
Summary
In the Linux kernel, the following vulnerability has been resolved:
mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow
Syzkaller reported this splat:
==================================================================
BUG: KASAN: slab-use-after-free in mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881
Read of size 4 at addr ffff8880569ac858 by task syz.1.2799/14662
CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
print_address_description mm/kasan/report.c:377 [inline]
print_report+0xc3/0x620 mm/kasan/report.c:488
kasan_report+0xd9/0x110 mm/kasan/report.c:601
mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881
mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [inline]
mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572
mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603
genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg net/socket.c:744 [inline]
____sys_sendmsg+0x9ae/0xb40 net/socket.c:2607
___sys_sendmsg+0x135/0x1e0 net/socket.c:2661
__sys_sendmsg+0x117/0x1f0 net/socket.c:2690
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fe4579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
Allocated by task 5387:
kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394
kmalloc_noprof include/linux/slab.h:878 [inline]
kzalloc_noprof include/linux/slab.h:1014 [inline]
subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803
subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956
__tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline]
tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167
mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764
__mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592
mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642
mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [inline]
mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943
mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777
process_one_work+0x958/0x1b30 kernel/workqueue.c:3229
process_scheduled_works kernel/workqueue.c:3310 [inline]
worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/ke
---truncated---
Severity
9.8 (Critical)
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-12-11 14:26 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
35b31f5549ede4070566b949781e83495906b43d , < 35301636439138b821f1f6169bd00d348ebd388a
(git)
Affected: 85b866e4c4e63a1d7afb58f1e24273caad03d0b7 , < da3343bc0839b180fd9af9c27fa456d8231409f9 (git) Affected: d20bf2c96d7ffd171299b32f562f70e5bf5dc608 , < 7b2e478abab0b3a33515433a6af563aebba773c1 (git) Affected: 1c1f721375989579e46741f59523e39ec9b2a9bd , < a8c36ea4ef9a350816f6556c5c5b63810f84b538 (git) Affected: 1c1f721375989579e46741f59523e39ec9b2a9bd , < 7decd1f5904a489d3ccdcf131972f94645681689 (git) Affected: 2060f1efab370b496c4903b840844ecaff324c3c (git) Affected: 5.15.167 , < 5.15.169 (semver) Affected: 6.1.107 , < 6.1.114 (semver) Affected: 6.6.48 , < 6.6.58 (semver) Affected: 6.10.7 , < 6.11 (semver) |
guessed | |
| Linux | Linux |
Affected:
6.11
Unaffected: 0 , < 6.11 (semver) Unaffected: 5.15.169 , ≤ 5.15.* (semver) Unaffected: 6.1.114 , ≤ 6.1.* (semver) Unaffected: 6.6.58 , ≤ 6.6.* (semver) Unaffected: 6.11.5 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
guessed |
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"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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"product": "Linux",
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],
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"vendor": "Linux",
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{
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{
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]
}
],
"cpeApplicability": [
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{
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"operator": "OR"
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}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow\n\nSyzkaller reported this splat:\n\n ==================================================================\n BUG: KASAN: slab-use-after-free in mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\n Read of size 4 at addr ffff8880569ac858 by task syz.1.2799/14662\n\n CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\n Call Trace:\n \u003cTASK\u003e\n __dump_stack lib/dump_stack.c:94 [inline]\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0xc3/0x620 mm/kasan/report.c:488\n kasan_report+0xd9/0x110 mm/kasan/report.c:601\n mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\n mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [inline]\n mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572\n mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603\n genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115\n genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]\n genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210\n netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219\n netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]\n netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357\n netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901\n sock_sendmsg_nosec net/socket.c:729 [inline]\n __sock_sendmsg net/socket.c:744 [inline]\n ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2607\n ___sys_sendmsg+0x135/0x1e0 net/socket.c:2661\n __sys_sendmsg+0x117/0x1f0 net/socket.c:2690\n do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]\n __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386\n do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411\n entry_SYSENTER_compat_after_hwframe+0x84/0x8e\n RIP: 0023:0xf7fe4579\n Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 \u003c5d\u003e 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00\n RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172\n RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\n RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000\n R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\n \u003c/TASK\u003e\n\n Allocated by task 5387:\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\n kasan_save_track+0x14/0x30 mm/kasan/common.c:68\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394\n kmalloc_noprof include/linux/slab.h:878 [inline]\n kzalloc_noprof include/linux/slab.h:1014 [inline]\n subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803\n subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956\n __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline]\n tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167\n mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764\n __mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592\n mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642\n mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [inline]\n mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943\n mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777\n process_one_work+0x958/0x1b30 kernel/workqueue.c:3229\n process_scheduled_works kernel/workqueue.c:3310 [inline]\n worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391\n kthread+0x2c1/0x3a0 kernel/kthread.c:389\n ret_from_fork+0x45/0x80 arch/x86/ke\n---truncated---"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The identical buggy line is reached with no local access at all when a remote MPTCP peer sends an RM_ADDR TCP option: `mptcp_incoming_options()` \u2192 `mptcp_pm_rm_addr_received()` \u2192 `mptcp_pm_nl_work()` \u2192 `mptcp_pm_nl_rm_addr_received()` \u2192 `mptcp_pm_nl_rm_addr_or_subflow()`. MPTCP is enabled by default (`pernet-\u003emptcp_enabled = 1`) and used by internet-facing services, so the remote peer of any `IPPROTO_MPTCP` connection can drive the close-then-use sequence.\nAC:L - The attacker controls both halves: it chooses which subflows exist (MP_JOIN) and when they are torn down (RM_ADDR ids, or repeated DEL_ADDR netlink calls), and it can drive the kfree_rcu drain by inducing memory pressure \u2014 the exact `kfree_rcu_shrink_scan()` path in the syzbot report. The sequence can be retried without limit and requires no memory layout the attacker cannot influence.\nPR:N - On the RM_ADDR path a remote peer needs no credentials whatsoever \u2014 subflow teardown is ordinary protocol traffic processed before any application-layer authentication. Even the local netlink path only carries `GENL_UNS_ADMIN_PERM`, i.e. CAP_NET_ADMIN in the owning user namespace, obtainable by any unprivileged user via `unshare -Urn`.\nUI:N - The path manager processes RM_ADDR and DEL_ADDR autonomously in the mptcp worker and netlink doit handler; no victim action such as opening a file, mounting a filesystem, or clicking anything is involved.\nS:U - The freed object and the corrupted state are both kernel-heap/MPTCP path-manager structures within the same security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - This is a KASAN-confirmed slab-use-after-free read of freed kmalloc-512 memory, and per kernel UAF scoring the attacker gains control over the freed object\u0027s contents through heap spraying of that widely-used cache. The stale contents then steer kernel control flow, and the resulting `pm.accept_addr` behaviour change is remotely observable, turning freed heap state into an attacker-visible oracle.\nI:H - Once the freed `mptcp_subflow_context` is reallocated with attacker-shaped data, the attacker chooses the value of `removed`, which directly drives `--msk-\u003epm.add_addr_accepted` and `WRITE_ONCE(msk-\u003epm.accept_addr, true)` \u2014 corrupting path-manager accounting and bypassing the administrator\u0027s configured `add_addr_accept_max`, so the host is forced to open additional subflows to attacker-announced addresses. Use-after-free access to a reallocated slab object is scored as high integrity impact.\nA:H - Use-after-free access is a crash vector: on KASAN or hardened builds it panics outright, and forcing `removed` true when `msk-\u003epm.add_addr_accepted == 0` trips `WARN_ON_ONCE()`, which is fatal on the many production and Android kernels running `panic_on_warn`. The sequence is repeatable at will by the remote peer."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:41:30.621Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/35301636439138b821f1f6169bd00d348ebd388a"
},
{
"url": "https://git.kernel.org/stable/c/da3343bc0839b180fd9af9c27fa456d8231409f9"
},
{
"url": "https://git.kernel.org/stable/c/7b2e478abab0b3a33515433a6af563aebba773c1"
},
{
"url": "https://git.kernel.org/stable/c/a8c36ea4ef9a350816f6556c5c5b63810f84b538"
},
{
"url": "https://git.kernel.org/stable/c/7decd1f5904a489d3ccdcf131972f94645681689"
}
],
"title": "mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2024-50085",
"datePublished": "2024-10-29T00:50:28.269Z",
"dateReserved": "2024-10-21T19:36:19.942Z",
"dateUpdated": "2026-08-05T11:41:30.621Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2024-50085",
"date": "2026-09-17",
"epss": "0.00476",
"percentile": "0.40089"
},
"microsoft_vex": {
"current_release_date": "2026-02-21T01:54:03.000Z",
"cve": "CVE-2024-50085",
"id": "msrc_CVE-2024-50085",
"initial_release_date": "2024-10-01T07:00:00.000Z",
"product_status:fixed": "2",
"product_status:known_affected": "2",
"product_status:known_not_affected": "2",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow",
"url": "https://msrc.microsoft.com/csaf/vex/2024/msrc_cve-2024-50085.json",
"version": "3"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2024-50085\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-10-29T01:15:05.400\",\"lastModified\":\"2026-08-04T11:21:16.583\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow\\n\\nSyzkaller reported this splat:\\n\\n ==================================================================\\n BUG: KASAN: slab-use-after-free in mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\\n Read of size 4 at addr ffff8880569ac858 by task syz.1.2799/14662\\n\\n CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\\n Call Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:94 [inline]\\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0xc3/0x620 mm/kasan/report.c:488\\n kasan_report+0xd9/0x110 mm/kasan/report.c:601\\n mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\\n mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [inline]\\n mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572\\n mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603\\n genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115\\n genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]\\n genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210\\n netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551\\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219\\n netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]\\n netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357\\n netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901\\n sock_sendmsg_nosec net/socket.c:729 [inline]\\n __sock_sendmsg net/socket.c:744 [inline]\\n ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2607\\n ___sys_sendmsg+0x135/0x1e0 net/socket.c:2661\\n __sys_sendmsg+0x117/0x1f0 net/socket.c:2690\\n do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]\\n __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386\\n do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411\\n entry_SYSENTER_compat_after_hwframe+0x84/0x8e\\n RIP: 0023:0xf7fe4579\\n Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 \u003c5d\u003e 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00\\n RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172\\n RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140\\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\\n RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\n R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\n\\n Allocated by task 5387:\\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\\n kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394\\n kmalloc_noprof include/linux/slab.h:878 [inline]\\n kzalloc_noprof include/linux/slab.h:1014 [inline]\\n subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803\\n subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956\\n __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline]\\n tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167\\n mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764\\n __mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592\\n mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642\\n mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [inline]\\n mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943\\n mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777\\n process_one_work+0x958/0x1b30 kernel/workqueue.c:3229\\n process_scheduled_works kernel/workqueue.c:3310 [inline]\\n worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391\\n kthread+0x2c1/0x3a0 kernel/kthread.c:389\\n ret_from_fork+0x45/0x80 arch/x86/ke\\n---truncated---\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp: pm: correcci\u00f3n de lectura UaF en mptcp_pm_nl_rm_addr_or_subflow Syzkaller inform\u00f3 este splat: ===================================================================== ERROR: KASAN: slab-use-after-free en mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881 Lectura de tama\u00f1o 4 en la direcci\u00f3n ffff8880569ac858 por la tarea syz.1.2799/14662 CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 No contaminado 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0 Nombre del hardware: PC est\u00e1ndar QEMU (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 01/04/2014 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:94 [en l\u00ednea] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:377 [en l\u00ednea] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881 mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [en l\u00ednea] mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572 mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603 genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [en l\u00ednea] genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [en l\u00ednea] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec red/socket.c:729 [en l\u00ednea] __sock_sendmsg red/socket.c:744 [en l\u00ednea] ____sys_sendmsg+0x9ae/0xb40 red/socket.c:2607 ___sys_sendmsg+0x135/0x1e0 red/socket.c:2661 __sys_sendmsg+0x117/0x1f0 red/socket.c:2690 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [en l\u00ednea] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fe4579 C\u00f3digo: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 \u0026lt;5d\u0026gt; 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140 RDX: 0000000000000000 RSI: 000000000000000 RDI: 000000000000000 RBP: 000000000000000 R08: 000000000000000 R09: 0000000000000000 R10: 00000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Asignado por la tarea 5387: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [en l\u00ednea] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394 kmalloc_noprof include/linux/slab.h:878 [en l\u00ednea] kzalloc_noprof include/linux/slab.h:1014 [en l\u00ednea] subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803 subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956 __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [en l\u00ednea] tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167 mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764 __mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592 mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642 mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [en l\u00ednea] mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943 mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777 proceso_uno_trabajo+0x958/0x1b30 kernel/workqueue.c:3229 proceso_trabajo_programado kernel/workqueue.c:3310 [en l\u00ednea] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/ke ---truncado---\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/mptcp/pm_netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"35b31f5549ede4070566b949781e83495906b43d\",\"lessThan\":\"35301636439138b821f1f6169bd00d348ebd388a\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"85b866e4c4e63a1d7afb58f1e24273caad03d0b7\",\"lessThan\":\"da3343bc0839b180fd9af9c27fa456d8231409f9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d20bf2c96d7ffd171299b32f562f70e5bf5dc608\",\"lessThan\":\"7b2e478abab0b3a33515433a6af563aebba773c1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c1f721375989579e46741f59523e39ec9b2a9bd\",\"lessThan\":\"a8c36ea4ef9a350816f6556c5c5b63810f84b538\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"1c1f721375989579e46741f59523e39ec9b2a9bd\",\"lessThan\":\"7decd1f5904a489d3ccdcf131972f94645681689\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2060f1efab370b496c4903b840844ecaff324c3c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.15.167\",\"lessThan\":\"5.15.169\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.107\",\"lessThan\":\"6.1.114\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.48\",\"lessThan\":\"6.6.58\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.10.7\",\"lessThan\":\"6.11\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/mptcp/pm_netlink.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.169\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.114\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.58\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11.5\",\"lessThanOrEqual\":\"6.11.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-12-11T14:26:02.743200Z\",\"id\":\"CVE-2024-50085\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.167\",\"versionEndExcluding\":\"5.15.169\",\"matchCriteriaId\":\"9DDBB6DB-56F4-4452-A614-F280F51289A5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.107\",\"versionEndExcluding\":\"6.1.114\",\"matchCriteriaId\":\"D27388DB-34B7-4580-BB3E-6F534937FC31\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.48\",\"versionEndExcluding\":\"6.6.58\",\"matchCriteriaId\":\"203B81C0-648C-4FAE-86D9-18004E1AA9B8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.10.7\",\"versionEndExcluding\":\"6.11\",\"matchCriteriaId\":\"48B1FCEA-70A6-45BD-A39B-9184638703FB\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.11\",\"versionEndExcluding\":\"6.11.5\",\"matchCriteriaId\":\"566D17E8-7DD1-40F5-9042-8FDAE762B036\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F361E1D-580F-4A2D-A509-7615F73167A1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"925478D0-3E3D-4E6F-ACD5-09F28D5DF82C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"3C95E234-D335-4B6C-96BF-E2CEBD8654ED\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/35301636439138b821f1f6169bd00d348ebd388a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7b2e478abab0b3a33515433a6af563aebba773c1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7decd1f5904a489d3ccdcf131972f94645681689\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a8c36ea4ef9a350816f6556c5c5b63810f84b538\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/da3343bc0839b180fd9af9c27fa456d8231409f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-09-13T18:32:50+00:00",
"cve": "CVE-2024-50085",
"id": "CVE-2024-50085",
"initial_release_date": "2024-10-29T00:00:00+00:00",
"product_status:known_not_affected": "198",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-50085.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:25:17.336Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-50085\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-12-11T14:26:02.743200Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-12-11T14:26:04.119Z\"}}], \"cna\": {\"title\": \"mptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"35b31f5549ede4070566b949781e83495906b43d\", \"lessThan\": \"35301636439138b821f1f6169bd00d348ebd388a\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"85b866e4c4e63a1d7afb58f1e24273caad03d0b7\", \"lessThan\": \"da3343bc0839b180fd9af9c27fa456d8231409f9\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d20bf2c96d7ffd171299b32f562f70e5bf5dc608\", \"lessThan\": \"7b2e478abab0b3a33515433a6af563aebba773c1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1c1f721375989579e46741f59523e39ec9b2a9bd\", \"lessThan\": \"a8c36ea4ef9a350816f6556c5c5b63810f84b538\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1c1f721375989579e46741f59523e39ec9b2a9bd\", \"lessThan\": \"7decd1f5904a489d3ccdcf131972f94645681689\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2060f1efab370b496c4903b840844ecaff324c3c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.15.167\", \"lessThan\": \"5.15.169\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.1.107\", \"lessThan\": \"6.1.114\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.6.48\", \"lessThan\": \"6.6.58\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"6.10.7\", \"lessThan\": \"6.11\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/mptcp/pm_netlink.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"6.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"6.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.169\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.114\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.58\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.11.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/mptcp/pm_netlink.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/35301636439138b821f1f6169bd00d348ebd388a\"}, {\"url\": \"https://git.kernel.org/stable/c/da3343bc0839b180fd9af9c27fa456d8231409f9\"}, {\"url\": \"https://git.kernel.org/stable/c/7b2e478abab0b3a33515433a6af563aebba773c1\"}, {\"url\": \"https://git.kernel.org/stable/c/a8c36ea4ef9a350816f6556c5c5b63810f84b538\"}, {\"url\": \"https://git.kernel.org/stable/c/7decd1f5904a489d3ccdcf131972f94645681689\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: pm: fix UaF read in mptcp_pm_nl_rm_addr_or_subflow\\n\\nSyzkaller reported this splat:\\n\\n ==================================================================\\n BUG: KASAN: slab-use-after-free in mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\\n Read of size 4 at addr ffff8880569ac858 by task syz.1.2799/14662\\n\\n CPU: 0 UID: 0 PID: 14662 Comm: syz.1.2799 Not tainted 6.12.0-rc2-syzkaller-00307-g36c254515dc6 #0\\n Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014\\n Call Trace:\\n \u003cTASK\u003e\\n __dump_stack lib/dump_stack.c:94 [inline]\\n dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120\\n print_address_description mm/kasan/report.c:377 [inline]\\n print_report+0xc3/0x620 mm/kasan/report.c:488\\n kasan_report+0xd9/0x110 mm/kasan/report.c:601\\n mptcp_pm_nl_rm_addr_or_subflow+0xb44/0xcc0 net/mptcp/pm_netlink.c:881\\n mptcp_pm_nl_rm_subflow_received net/mptcp/pm_netlink.c:914 [inline]\\n mptcp_nl_remove_id_zero_address+0x305/0x4a0 net/mptcp/pm_netlink.c:1572\\n mptcp_pm_nl_del_addr_doit+0x5c9/0x770 net/mptcp/pm_netlink.c:1603\\n genl_family_rcv_msg_doit+0x202/0x2f0 net/netlink/genetlink.c:1115\\n genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]\\n genl_rcv_msg+0x565/0x800 net/netlink/genetlink.c:1210\\n netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2551\\n genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219\\n netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]\\n netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1357\\n netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1901\\n sock_sendmsg_nosec net/socket.c:729 [inline]\\n __sock_sendmsg net/socket.c:744 [inline]\\n ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2607\\n ___sys_sendmsg+0x135/0x1e0 net/socket.c:2661\\n __sys_sendmsg+0x117/0x1f0 net/socket.c:2690\\n do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]\\n __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386\\n do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411\\n entry_SYSENTER_compat_after_hwframe+0x84/0x8e\\n RIP: 0023:0xf7fe4579\\n Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 \u003c5d\u003e 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00\\n RSP: 002b:00000000f574556c EFLAGS: 00000296 ORIG_RAX: 0000000000000172\\n RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000020000140\\n RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000\\n RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000\\n R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000\\n R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000\\n \u003c/TASK\u003e\\n\\n Allocated by task 5387:\\n kasan_save_stack+0x33/0x60 mm/kasan/common.c:47\\n kasan_save_track+0x14/0x30 mm/kasan/common.c:68\\n poison_kmalloc_redzone mm/kasan/common.c:377 [inline]\\n __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:394\\n kmalloc_noprof include/linux/slab.h:878 [inline]\\n kzalloc_noprof include/linux/slab.h:1014 [inline]\\n subflow_create_ctx+0x87/0x2a0 net/mptcp/subflow.c:1803\\n subflow_ulp_init+0xc3/0x4d0 net/mptcp/subflow.c:1956\\n __tcp_set_ulp net/ipv4/tcp_ulp.c:146 [inline]\\n tcp_set_ulp+0x326/0x7f0 net/ipv4/tcp_ulp.c:167\\n mptcp_subflow_create_socket+0x4ae/0x10a0 net/mptcp/subflow.c:1764\\n __mptcp_subflow_connect+0x3cc/0x1490 net/mptcp/subflow.c:1592\\n mptcp_pm_create_subflow_or_signal_addr+0xbda/0x23a0 net/mptcp/pm_netlink.c:642\\n mptcp_pm_nl_fully_established net/mptcp/pm_netlink.c:650 [inline]\\n mptcp_pm_nl_work+0x3a1/0x4f0 net/mptcp/pm_netlink.c:943\\n mptcp_worker+0x15a/0x1240 net/mptcp/protocol.c:2777\\n process_one_work+0x958/0x1b30 kernel/workqueue.c:3229\\n process_scheduled_works kernel/workqueue.c:3310 [inline]\\n worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391\\n kthread+0x2c1/0x3a0 kernel/kthread.c:389\\n ret_from_fork+0x45/0x80 arch/x86/ke\\n---truncated---\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.169\", \"versionStartIncluding\": \"5.15.167\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.114\", \"versionStartIncluding\": \"6.1.107\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.58\", \"versionStartIncluding\": \"6.6.48\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11.5\", \"versionStartIncluding\": \"6.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12\", \"versionStartIncluding\": \"6.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.10.7\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-23T15:54:26.655Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-50085\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:54:26.655Z\", \"dateReserved\": \"2024-10-21T19:36:19.942Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-29T00:50:28.269Z\", \"assignerShortName\": \"Linux\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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