CVE-2024-46858 (GCVE-0-2024-46858)
Vulnerability from cvelistv5 – Published: 2024-09-27 12:42 – Updated: 2026-08-05 11:39
VLAI
EPSS
VEX
Title
mptcp: pm: Fix uaf in __timer_delete_sync
Summary
In the Linux kernel, the following vulnerability has been resolved:
mptcp: pm: Fix uaf in __timer_delete_sync
There are two paths to access mptcp_pm_del_add_timer, result in a race
condition:
CPU1 CPU2
==== ====
net_rx_action
napi_poll netlink_sendmsg
__napi_poll netlink_unicast
process_backlog netlink_unicast_kernel
__netif_receive_skb genl_rcv
__netif_receive_skb_one_core netlink_rcv_skb
NF_HOOK genl_rcv_msg
ip_local_deliver_finish genl_family_rcv_msg
ip_protocol_deliver_rcu genl_family_rcv_msg_doit
tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit
tcp_v4_do_rcv mptcp_nl_remove_addrs_list
tcp_rcv_established mptcp_pm_remove_addrs_and_subflows
tcp_data_queue remove_anno_list_by_saddr
mptcp_incoming_options mptcp_pm_del_add_timer
mptcp_pm_del_add_timer kfree(entry)
In remove_anno_list_by_saddr(running on CPU2), after leaving the critical
zone protected by "pm.lock", the entry will be released, which leads to the
occurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).
Keeping a reference to add_timer inside the lock, and calling
sk_stop_timer_sync() with this reference, instead of "entry->add_timer".
Move list_del(&entry->list) to mptcp_pm_del_add_timer and inside the pm lock,
do not directly access any members of the entry outside the pm lock, which
can avoid similar "entry->x" uaf.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 13:57 UTC
Assigner
References
8 references
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 0e7814b028cd50b3ff79659d23dfa9da6a1e75e1
(git)
Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 3554482f4691571fc4b5490c17ae26896e62171c (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 67409b358500c71632116356a0b065f112d7b707 (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 6452b162549c7f9ef54655d3fb9977b9192e6e5b (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < 12134a652b0a10064844ea235173e70246eba6dc (git) Affected: 00cfd77b9063dcdf3628a7087faba60de85a9cc8 , < b4cd80b0338945a94972ac3ed54f8338d2da2076 (git) |
guessed | |
| Linux | Linux |
Affected:
5.10
Unaffected: 0 , < 5.10 (semver) Unaffected: 5.10.227 , ≤ 5.10.* (semver) Unaffected: 5.15.168 , ≤ 5.15.* (semver) Unaffected: 6.1.111 , ≤ 6.1.* (semver) Unaffected: 6.6.52 , ≤ 6.6.* (semver) Unaffected: 6.10.11 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix) |
guessed |
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"descriptions": [
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: Fix uaf in __timer_delete_sync\n\nThere are two paths to access mptcp_pm_del_add_timer, result in a race\ncondition:\n\n CPU1\t\t\t\tCPU2\n ==== ====\n net_rx_action\n napi_poll netlink_sendmsg\n __napi_poll netlink_unicast\n process_backlog netlink_unicast_kernel\n __netif_receive_skb genl_rcv\n __netif_receive_skb_one_core netlink_rcv_skb\n NF_HOOK genl_rcv_msg\n ip_local_deliver_finish genl_family_rcv_msg\n ip_protocol_deliver_rcu genl_family_rcv_msg_doit\n tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit\n tcp_v4_do_rcv mptcp_nl_remove_addrs_list\n tcp_rcv_established mptcp_pm_remove_addrs_and_subflows\n tcp_data_queue remove_anno_list_by_saddr\n mptcp_incoming_options mptcp_pm_del_add_timer\n mptcp_pm_del_add_timer kfree(entry)\n\nIn remove_anno_list_by_saddr(running on CPU2), after leaving the critical\nzone protected by \"pm.lock\", the entry will be released, which leads to the\noccurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).\n\nKeeping a reference to add_timer inside the lock, and calling\nsk_stop_timer_sync() with this reference, instead of \"entry-\u003eadd_timer\".\n\nMove list_del(\u0026entry-\u003elist) to mptcp_pm_del_add_timer and inside the pm lock,\ndo not directly access any members of the entry outside the pm lock, which\ncan avoid similar \"entry-\u003ex\" uaf."
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"value": "AV:N - The use-after-free dereference occurs in the TCP/MPTCP receive path (`mptcp_incoming_options()` \u2192 `mptcp_pm_del_add_timer()`), driven entirely by an `ADD_ADDR` echo option in a TCP segment sent by the remote MPTCP peer, executed in softirq context. Any internet-facing MPTCP-enabled endpoint (server or Android/mobile client with a `signal` endpoint configured) processes this attacker-supplied option, so the vulnerable code is reached over the network.\nAC:H - The remote peer can hammer the racing side without limit by repeatedly sending ADD_ADDR echoes, but the freeing side must be executed concurrently by the local path manager (netlink FLUSH_ADDRS/DEL_ADDR, e.g. mptcpd reacting to an interface change), which is timing the attacker cannot influence. Winning that window is a condition beyond the remote attacker\u0027s control.\nPR:N - The attacker-controlled side requires only being the peer of an established MPTCP connection to a listening service \u2014 no account, credentials, or privileges on the target are needed, and the ADD_ADDR echo is accepted as part of normal protocol processing once the connection is fully established.\nUI:N - No victim action is required; the ADD_ADDR announcement and the peer\u0027s echo are automatic protocol behaviour, and the concurrent endpoint flush is performed by a background path-manager daemon rather than an interactive user.\nS:U - The corruption is confined to kernel heap memory within the same security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The freed `mptcp_pm_add_entry` lives in a generic kmalloc cache and can be reclaimed with attacker-shaped data, and the subsequent `timer_delete_sync()`/`__sock_put()` on that stale object gives a foothold for arbitrary kernel memory disclosure, as is standard for slab use-after-free.\nI:H - `__timer_delete_sync()` on the reclaimed object acts on attacker-influenced `timer-\u003eflags` and can perform an hlist unlink write (`*pprev = next; next-\u003epprev = pprev`), and the spurious `__sock_put()` underflows the socket refcount \u2014 both yield write primitives leveragable for control-flow hijack. The same missing-lock defect also permits a double `kfree()` of the entry from two concurrent netlink removals.\nA:H - The use-after-free reliably produces a KASAN slab-use-after-free / kernel oops in softirq context (as reported by syzbot), and the resulting timer-base list corruption or socket refcount underflow causes a kernel panic."
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"nvd": "{\"cve\":{\"id\":\"CVE-2024-46858\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-09-27T13:15:17.353\",\"lastModified\":\"2026-08-04T11:20:34.037\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nmptcp: pm: Fix uaf in __timer_delete_sync\\n\\nThere are two paths to access mptcp_pm_del_add_timer, result in a race\\ncondition:\\n\\n CPU1\\t\\t\\t\\tCPU2\\n ==== ====\\n net_rx_action\\n napi_poll netlink_sendmsg\\n __napi_poll netlink_unicast\\n process_backlog netlink_unicast_kernel\\n __netif_receive_skb genl_rcv\\n __netif_receive_skb_one_core netlink_rcv_skb\\n NF_HOOK genl_rcv_msg\\n ip_local_deliver_finish genl_family_rcv_msg\\n ip_protocol_deliver_rcu genl_family_rcv_msg_doit\\n tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit\\n tcp_v4_do_rcv mptcp_nl_remove_addrs_list\\n tcp_rcv_established mptcp_pm_remove_addrs_and_subflows\\n tcp_data_queue remove_anno_list_by_saddr\\n mptcp_incoming_options mptcp_pm_del_add_timer\\n mptcp_pm_del_add_timer kfree(entry)\\n\\nIn remove_anno_list_by_saddr(running on CPU2), after leaving the critical\\nzone protected by \\\"pm.lock\\\", the entry will be released, which leads to the\\noccurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).\\n\\nKeeping a reference to add_timer inside the lock, and calling\\nsk_stop_timer_sync() with this reference, instead of \\\"entry-\u003eadd_timer\\\".\\n\\nMove list_del(\u0026entry-\u003elist) to mptcp_pm_del_add_timer and inside the pm lock,\\ndo not directly access any members of the entry outside the pm lock, which\\ncan avoid similar \\\"entry-\u003ex\\\" uaf.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mptcp:pm: Se corrige uaf en __timer_delete_sync Hay dos rutas para acceder a mptcp_pm_del_add_timer, lo que genera una condici\u00f3n de carrera: CPU1 CPU2 ==== ==== net_rx_action napi_poll netlink_sendmsg __napi_poll netlink_unicast process_backlog netlink_unicast_kernel __netif_receive_skb genl_rcv __netif_receive_skb_one_core netlink_rcv_skb NF_HOOK genl_rcv_msg ip_local_deliver_finish genl_family_rcv_msg ip_protocol_deliver_rcu genl_family_rcv_msg_doit tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit tcp_v4_do_rcv mptcp_nl_remove_addrs_list tcp_rcv_established mptcp_pm_remove_addrs_and_subflows tcp_data_queue remove_anno_list_by_saddr mptcp_incoming_options mptcp_pm_del_add_timer mptcp_pm_del_add_timer kfree(entrada) En remove_anno_list_by_saddr(que se ejecuta en la CPU2), despu\u00e9s de salir de la zona cr\u00edtica protegida por \\\"pm.lock\\\", se liberar\u00e1 la entrada, lo que lleva a la aparici\u00f3n de uaf en mptcp_pm_del_add_timer(que se ejecuta en la CPU1). Mantener una referencia a add_timer dentro del bloqueo y llamar a sk_stop_timer_sync() con esta referencia, en lugar de \\\"entrada-\u0026gt;add_timer\\\". Mueva list_del(\u0026amp;entry-\u0026gt;list) a mptcp_pm_del_add_timer y dentro del bloqueo pm, no acceda directamente a ning\u00fan miembro de la entrada fuera del bloqueo pm, lo que puede evitar un uaf \\\"entry-\u0026gt;x\\\" similar.\"}],\"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\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"0e7814b028cd50b3ff79659d23dfa9da6a1e75e1\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"3554482f4691571fc4b5490c17ae26896e62171c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"67409b358500c71632116356a0b065f112d7b707\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"6452b162549c7f9ef54655d3fb9977b9192e6e5b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"12134a652b0a10064844ea235173e70246eba6dc\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"00cfd77b9063dcdf3628a7087faba60de85a9cc8\",\"lessThan\":\"b4cd80b0338945a94972ac3ed54f8338d2da2076\",\"versionType\":\"git\",\"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\":\"5.10\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.10\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.227\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.168\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.111\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.52\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.10.11\",\"lessThanOrEqual\":\"6.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.11\",\"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:H/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.0,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.0,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-09-29T13:57:46.692938Z\",\"id\":\"CVE-2024-46858\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10\",\"versionEndExcluding\":\"6.1.111\",\"matchCriteriaId\":\"2B62FC78-DC08-42C4-9B1A-D1F4632DBBE5\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.52\",\"matchCriteriaId\":\"02ADDA94-95BB-484D-8E95-63C0428A28E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.10.11\",\"matchCriteriaId\":\"F5DB5367-F1F5-4200-B3B3-FDF8AFC3D255\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc1:*:*:*:*:*:*\",\"matchCriteriaId\":\"8B3CE743-2126-47A3-8B7C-822B502CF119\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc2:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DEB27E7-30AA-45CC-8934-B89263EF3551\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc3:*:*:*:*:*:*\",\"matchCriteriaId\":\"E0005AEF-856E-47EB-BFE4-90C46899394D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc4:*:*:*:*:*:*\",\"matchCriteriaId\":\"39889A68-6D34-47A6-82FC-CD0BF23D6754\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc5:*:*:*:*:*:*\",\"matchCriteriaId\":\"B8383ABF-1457-401F-9B61-EE50F4C61F4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc6:*:*:*:*:*:*\",\"matchCriteriaId\":\"B77A9280-37E6-49AD-B559-5B23A3B1DC3D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:6.11:rc7:*:*:*:*:*:*\",\"matchCriteriaId\":\"DE5298B3-04B4-4F3E-B186-01A58B5C75A6\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0e7814b028cd50b3ff79659d23dfa9da6a1e75e1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dc\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/3554482f4691571fc4b5490c17ae26896e62171c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/67409b358500c71632116356a0b065f112d7b707\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076\",\"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\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T18:07:15+00:00",
"cve": "CVE-2024-46858",
"id": "CVE-2024-46858",
"initial_release_date": "2024-09-27T00:00:00+00:00",
"product_status:fixed": "1440",
"product_status:known_affected": "38",
"product_status:known_not_affected": "43",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: mptcp: pm: Fix uaf in __timer_delete_sync",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46858.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T22:19:44.734Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-46858\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-29T13:57:46.692938Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-29T13:57:48.385Z\"}}], \"cna\": {\"title\": \"mptcp: pm: Fix uaf in __timer_delete_sync\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"0e7814b028cd50b3ff79659d23dfa9da6a1e75e1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"3554482f4691571fc4b5490c17ae26896e62171c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"67409b358500c71632116356a0b065f112d7b707\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"6452b162549c7f9ef54655d3fb9977b9192e6e5b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"12134a652b0a10064844ea235173e70246eba6dc\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"00cfd77b9063dcdf3628a7087faba60de85a9cc8\", \"lessThan\": \"b4cd80b0338945a94972ac3ed54f8338d2da2076\", \"versionType\": \"git\"}], \"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\": \"5.10\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.10\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.227\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.168\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.111\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.52\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.10.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.10.*\"}, {\"status\": \"unaffected\", \"version\": \"6.11\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/mptcp/pm_netlink.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/0e7814b028cd50b3ff79659d23dfa9da6a1e75e1\"}, {\"url\": \"https://git.kernel.org/stable/c/3554482f4691571fc4b5490c17ae26896e62171c\"}, {\"url\": \"https://git.kernel.org/stable/c/67409b358500c71632116356a0b065f112d7b707\"}, {\"url\": \"https://git.kernel.org/stable/c/6452b162549c7f9ef54655d3fb9977b9192e6e5b\"}, {\"url\": \"https://git.kernel.org/stable/c/12134a652b0a10064844ea235173e70246eba6dc\"}, {\"url\": \"https://git.kernel.org/stable/c/b4cd80b0338945a94972ac3ed54f8338d2da2076\"}], \"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 in __timer_delete_sync\\n\\nThere are two paths to access mptcp_pm_del_add_timer, result in a race\\ncondition:\\n\\n CPU1\\t\\t\\t\\tCPU2\\n ==== ====\\n net_rx_action\\n napi_poll netlink_sendmsg\\n __napi_poll netlink_unicast\\n process_backlog netlink_unicast_kernel\\n __netif_receive_skb genl_rcv\\n __netif_receive_skb_one_core netlink_rcv_skb\\n NF_HOOK genl_rcv_msg\\n ip_local_deliver_finish genl_family_rcv_msg\\n ip_protocol_deliver_rcu genl_family_rcv_msg_doit\\n tcp_v4_rcv mptcp_pm_nl_flush_addrs_doit\\n tcp_v4_do_rcv mptcp_nl_remove_addrs_list\\n tcp_rcv_established mptcp_pm_remove_addrs_and_subflows\\n tcp_data_queue remove_anno_list_by_saddr\\n mptcp_incoming_options mptcp_pm_del_add_timer\\n mptcp_pm_del_add_timer kfree(entry)\\n\\nIn remove_anno_list_by_saddr(running on CPU2), after leaving the critical\\nzone protected by \\\"pm.lock\\\", the entry will be released, which leads to the\\noccurrence of uaf in the mptcp_pm_del_add_timer(running on CPU1).\\n\\nKeeping a reference to add_timer inside the lock, and calling\\nsk_stop_timer_sync() with this reference, instead of \\\"entry-\u003eadd_timer\\\".\\n\\nMove list_del(\u0026entry-\u003elist) to mptcp_pm_del_add_timer and inside the pm lock,\\ndo not directly access any members of the entry outside the pm lock, which\\ncan avoid similar \\\"entry-\u003ex\\\" uaf.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.227\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.168\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.111\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.52\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.10.11\", \"versionStartIncluding\": \"5.10\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.11\", \"versionStartIncluding\": \"5.10\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-24T13:21:35.775Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2024-46858\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-24T13:21:35.775Z\", \"dateReserved\": \"2024-09-11T15:12:18.291Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-27T12:42:49.167Z\", \"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.
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.
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