CVE-2022-48919 (GCVE-0-2022-48919)
Vulnerability from cvelistv5 – Published: 2024-08-22 01:32 – Updated: 2026-08-05 08:52
VLAI
EPSS
VEX
Title
cifs: fix double free race when mount fails in cifs_get_root()
Summary
In the Linux kernel, the following vulnerability has been resolved:
cifs: fix double free race when mount fails in cifs_get_root()
When cifs_get_root() fails during cifs_smb3_do_mount() we call
deactivate_locked_super() which eventually will call delayed_free() which
will free the context.
In this situation we should not proceed to enter the out: section in
cifs_smb3_do_mount() and free the same resources a second time.
[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60
[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0
[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4
[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019
[Thu Feb 10 12:59:06 2022] Call Trace:
[Thu Feb 10 12:59:06 2022] <IRQ>
[Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78
[Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150
[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60
[Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117
[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60
[Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0
[Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60
[Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0
[Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0
[Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20
[Thu Feb 10 12:59:06 2022] ? lock_is_held_type+0xea/0x140
[Thu Feb 10 12:59:06 2022] rcu_core_si+0xe/0x10
[Thu Feb 10 12:59:06 2022] __do_softirq+0x1d4/0x67b
[Thu Feb 10 12:59:06 2022] __irq_exit_rcu+0x100/0x150
[Thu Feb 10 12:59:06 2022] irq_exit_rcu+0xe/0x30
[Thu Feb 10 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0
...
[Thu Feb 10 12:59:07 2022] Freed by task 58179:
[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50
[Thu Feb 10 12:59:07 2022] kasan_set_track+0x25/0x30
[Thu Feb 10 12:59:07 2022] kasan_set_free_info+0x24/0x40
[Thu Feb 10 12:59:07 2022] ____kasan_slab_free+0x137/0x170
[Thu Feb 10 12:59:07 2022] __kasan_slab_free+0x12/0x20
[Thu Feb 10 12:59:07 2022] slab_free_freelist_hook+0xb3/0x1d0
[Thu Feb 10 12:59:07 2022] kfree+0xcd/0x520
[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs]
[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]
[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140
[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0
[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210
[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0
[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae
[Thu Feb 10 12:59:07 2022] Last potentially related work creation:
[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50
[Thu Feb 10 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0
[Thu Feb 10 12:59:07 2022] kasan_record_aux_stack_noalloc+0xb/0x10
[Thu Feb 10 12:59:07 2022] call_rcu+0x76/0x3c0
[Thu Feb 10 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs]
[Thu Feb 10 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [cifs]
[Thu Feb 10 12:59:07 2022] deactivate_locked_super+0x5d/0xd0
[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0xab9/0xbe0 [cifs]
[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]
[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140
[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0
[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210
[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0
[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 15:33 UTC
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d17abdf7566566fc402c31899b353044a7ff3cf4 , < 546d60859ecf13380fcabcbeace53a5971493a2b
(git)
Affected: d17abdf7566566fc402c31899b353044a7ff3cf4 , < 563431c1f3c8f2230e4a9c445fa23758742bc4f0 (git) Affected: d17abdf7566566fc402c31899b353044a7ff3cf4 , < 3d6cc9898efdfb062efb74dc18cfc700e082f5d5 (git) |
guessed | |
| Linux | Linux |
Affected:
5.11
Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.27 , ≤ 5.15.* (semver) Unaffected: 5.16.13 , ≤ 5.16.* (semver) Unaffected: 5.17 , ≤ * (original_commit_for_fix) |
guessed |
{
"containers": {
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"metrics": [
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"other": {
"content": {
"id": "CVE-2022-48919",
"options": [
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"Automatable": "no"
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{
"Technical Impact": "partial"
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"role": "CISA Coordinator",
"timestamp": "2024-09-10T15:33:34.933209Z",
"version": "2.0.3"
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"providerMetadata": {
"dateUpdated": "2024-09-12T17:33:11.259Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
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"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/cifs/cifsfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "546d60859ecf13380fcabcbeace53a5971493a2b",
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"version": "d17abdf7566566fc402c31899b353044a7ff3cf4",
"versionType": "git"
},
{
"lessThan": "563431c1f3c8f2230e4a9c445fa23758742bc4f0",
"status": "affected",
"version": "d17abdf7566566fc402c31899b353044a7ff3cf4",
"versionType": "git"
},
{
"lessThan": "3d6cc9898efdfb062efb74dc18cfc700e082f5d5",
"status": "affected",
"version": "d17abdf7566566fc402c31899b353044a7ff3cf4",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/cifs/cifsfs.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"lessThan": "5.11",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"version": "5.15.27",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.16.*",
"status": "unaffected",
"version": "5.16.13",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.17",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.27",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.16.13",
"versionStartIncluding": "5.11",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.17",
"versionStartIncluding": "5.11",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: fix double free race when mount fails in cifs_get_root()\n\nWhen cifs_get_root() fails during cifs_smb3_do_mount() we call\ndeactivate_locked_super() which eventually will call delayed_free() which\nwill free the context.\nIn this situation we should not proceed to enter the out: section in\ncifs_smb3_do_mount() and free the same resources a second time.\n\n[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0\n\n[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4\n[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019\n[Thu Feb 10 12:59:06 2022] Call Trace:\n[Thu Feb 10 12:59:06 2022] \u003cIRQ\u003e\n[Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78\n[Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0\n[Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60\n[Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0\n[Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0\n[Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20\n[Thu Feb 10 12:59:06 2022] ? lock_is_held_type+0xea/0x140\n[Thu Feb 10 12:59:06 2022] rcu_core_si+0xe/0x10\n[Thu Feb 10 12:59:06 2022] __do_softirq+0x1d4/0x67b\n[Thu Feb 10 12:59:06 2022] __irq_exit_rcu+0x100/0x150\n[Thu Feb 10 12:59:06 2022] irq_exit_rcu+0xe/0x30\n[Thu Feb 10 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0\n...\n[Thu Feb 10 12:59:07 2022] Freed by task 58179:\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022] kasan_set_track+0x25/0x30\n[Thu Feb 10 12:59:07 2022] kasan_set_free_info+0x24/0x40\n[Thu Feb 10 12:59:07 2022] ____kasan_slab_free+0x137/0x170\n[Thu Feb 10 12:59:07 2022] __kasan_slab_free+0x12/0x20\n[Thu Feb 10 12:59:07 2022] slab_free_freelist_hook+0xb3/0x1d0\n[Thu Feb 10 12:59:07 2022] kfree+0xcd/0x520\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\n\n[Thu Feb 10 12:59:07 2022] Last potentially related work creation:\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\n[Thu Feb 10 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0\n[Thu Feb 10 12:59:07 2022] kasan_record_aux_stack_noalloc+0xb/0x10\n[Thu Feb 10 12:59:07 2022] call_rcu+0x76/0x3c0\n[Thu Feb 10 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [cifs]\n[Thu Feb 10 12:59:07 2022] deactivate_locked_super+0x5d/0xd0\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0xab9/0xbe0 [cifs]\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:N - The vulnerable path is in the CIFS client during mount of a remote SMB share; a malicious SMB server can induce cifs_read_super()/cifs_get_root() failure after session/tree setup, triggering the buggy cleanup over the network.\nAC:L - A single failed mount through out_super deterministically double-frees prepath immediately and frees cifs_sb/ctx while an RCU delayed_free remains pending; the attacker fully controls the failing server responses and needs no uncontrolled race.\nPR:N - The attacker is the remote SMB server endpoint and needs no privileges on the victim client; client-side mount capability is part of the victim action, not attacker privilege.\nUI:R - A victim must mount or otherwise initiate a CIFS/SMB3 connection to the attacker-controlled share; the server cannot reach cifs_smb3_do_mount without that client action.\nS:U - The double-free/UAF impacts the local kernel CIFS client within the same security authority and does not cross a VM, IOMMU, or sandbox boundary.\nC:H - This is a use-after-free/double-free of cifs_sb and its smb3_fs_context, enabling heap reuse and arbitrary read primitives per UAF exploitation.\nI:H - The same double-free/UAF of heap objects (cifs_sb/ctx/prepath) enables heap spraying and arbitrary write or control-flow hijacking primitives.\nA:H - The bug produces a kernel use-after-free (KASAN report in rcu_cblist_dequeue) that can oops/panic the system even without full exploitation."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T08:52:54.791Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b"
},
{
"url": "https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0"
},
{
"url": "https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5"
}
],
"title": "cifs: fix double free race when mount fails in cifs_get_root()",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-48919",
"datePublished": "2024-08-22T01:32:43.390Z",
"dateReserved": "2024-08-21T06:06:23.295Z",
"dateUpdated": "2026-08-05T08:52:54.791Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2022-48919",
"date": "2026-09-16",
"epss": "0.00468",
"percentile": "0.39478"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2022-48919\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-08-22T02:15:05.987\",\"lastModified\":\"2026-08-04T10:17:26.430\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncifs: fix double free race when mount fails in cifs_get_root()\\n\\nWhen cifs_get_root() fails during cifs_smb3_do_mount() we call\\ndeactivate_locked_super() which eventually will call delayed_free() which\\nwill free the context.\\nIn this situation we should not proceed to enter the out: section in\\ncifs_smb3_do_mount() and free the same resources a second time.\\n\\n[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0\\n\\n[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4\\n[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019\\n[Thu Feb 10 12:59:06 2022] Call Trace:\\n[Thu Feb 10 12:59:06 2022] \u003cIRQ\u003e\\n[Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78\\n[Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150\\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117\\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0\\n[Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0\\n[Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0\\n[Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20\\n[Thu Feb 10 12:59:06 2022] ? lock_is_held_type+0xea/0x140\\n[Thu Feb 10 12:59:06 2022] rcu_core_si+0xe/0x10\\n[Thu Feb 10 12:59:06 2022] __do_softirq+0x1d4/0x67b\\n[Thu Feb 10 12:59:06 2022] __irq_exit_rcu+0x100/0x150\\n[Thu Feb 10 12:59:06 2022] irq_exit_rcu+0xe/0x30\\n[Thu Feb 10 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0\\n...\\n[Thu Feb 10 12:59:07 2022] Freed by task 58179:\\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\\n[Thu Feb 10 12:59:07 2022] kasan_set_track+0x25/0x30\\n[Thu Feb 10 12:59:07 2022] kasan_set_free_info+0x24/0x40\\n[Thu Feb 10 12:59:07 2022] ____kasan_slab_free+0x137/0x170\\n[Thu Feb 10 12:59:07 2022] __kasan_slab_free+0x12/0x20\\n[Thu Feb 10 12:59:07 2022] slab_free_freelist_hook+0xb3/0x1d0\\n[Thu Feb 10 12:59:07 2022] kfree+0xcd/0x520\\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\n[Thu Feb 10 12:59:07 2022] Last potentially related work creation:\\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\\n[Thu Feb 10 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0\\n[Thu Feb 10 12:59:07 2022] kasan_record_aux_stack_noalloc+0xb/0x10\\n[Thu Feb 10 12:59:07 2022] call_rcu+0x76/0x3c0\\n[Thu Feb 10 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] deactivate_locked_super+0x5d/0xd0\\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0xab9/0xbe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: corrige doble ejecuci\u00f3n libre cuando falla el montaje en cifs_get_root() Cuando cifs_get_root() falla durante cifs_smb3_do_mount() llamamos a deactivate_locked_super() que eventualmente llamar\u00e1 a delay_free() que liberar\u00e1 el contexto. En esta situaci\u00f3n no debemos proceder a ingresar a la secci\u00f3n out: en cifs_smb3_do_mount() y liberar los mismos recursos por segunda vez. [Jueves 10 de febrero 12:59:06 2022] ERROR: KASAN: use-after-free en rcu_cblist_dequeue+0x32/0x60 [Jueves 10 de febrero 12:59:06 2022] Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff888364f4d110 por task swapper/1/ 0 [jueves 10 de febrero 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4 [jueves 10 de febrero 12:59:06 2022] Nombre del hardware: Microsoft Corporation M\u00e1quina virtual/M\u00e1quina virtual, BIOS Hyper-V UEFI versi\u00f3n v4.0 17/12/2019 [jueves 10 de febrero 12:59:06 2022] Seguimiento de llamadas: [jueves 10 de febrero 12:59:06 2022] [jueves 10 de febrero 12:59:06 2022] dump_stack_lvl+0x5d/0x78 [jueves 10 de febrero 12:59:06 2022] print_address_description.constprop.0+0x24/0x150 [jueves 10 de febrero 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60 [jueves 10 de febrero 12:59:06 2022] kasan_report.cold+0x7d/0x117 [jueves 10 de febrero 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60 [jueves 10 de febrero 12:59:06 2022] __asan_load8+0x86/0xa0 [jueves 10 de febrero 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60 [jueves 10 de febrero 12:59:06 2022] rcu_core+ 0x547/0xca0 [jueves 10 de febrero 12:59:06 2022]? call_rcu+0x3c0/0x3c0 [jueves 10 de febrero 12:59:06 2022]? __this_cpu_preempt_check+0x13/0x20 [jueves 10 de febrero 12:59:06 2022] ? lock_is_held_type+0xea/0x140 [jueves 10 de febrero 12:59:06 2022] rcu_core_si+0xe/0x10 [jueves 10 de febrero 12:59:06 2022] __do_softirq+0x1d4/0x67b [jueves 10 de febrero 12:59:06 2022] salida_rcu+ 0x100/0x150 [jueves 10 de febrero 12:59:06 2022] irq_exit_rcu+0xe/0x30 [jueves 10 de febrero 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0 ... [jueves 10 de febrero 12:59:07 2022] Liberado por tarea 58179: [jueves 10 de febrero 12:59:07 2022] kasan_save_stack+0x26/0x50 [jueves 10 de febrero 12:59:07 2022] kasan_set_track+0x25/0x30 [jueves 10 de febrero 12:59:07 2022] kasan_set_free_info+0x24 /0x40 [jueves 10 de febrero 12:59:07 2022] ____kasan_slab_free+0x137/0x170 [jueves 10 de febrero 12:59:07 2022] __kasan_slab_free+0x12/0x20 [jueves 10 de febrero 12:59:07 2022] xb3/0x1d0 [Jueves 10 de febrero 12:59:07 2022] kfree+0xcd/0x520 [Jueves 10 de febrero 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs] [Jueves 10 de febrero 12:59:07 2022] smb3_get_tree+0x1a0/ 0x2e0 [cifs] [jueves 10 de febrero 12:59:07 2022] vfs_get_tree+0x52/0x140 [jueves 10 de febrero 12:59:07 2022] path_mount+0x635/0x10c0 [jueves 10 de febrero 12:59:07 2022] __x64_sys_mount+ 0x1bf /0x210 [jueves 10 de febrero 12:59:07 2022] do_syscall_64+0x5c/0xc0 [jueves 10 de febrero 12:59:07 2022] Entry_SYSCALL_64_after_hwframe+0x44/0xae [jueves 10 de febrero 12:59:07 2022] \u00daltima creaci\u00f3n de trabajo potencialmente relacionado : [jueves 10 de febrero 12:59:07 2022] kasan_save_stack+0x26/0x50 [jueves 10 de febrero 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0 [jueves 10 de febrero 12:59:07 2022] kasan_record_aux_stack_noalloc+0 xb/0x10 [ Jueves 10 de febrero 12:59:07 2022] call_rcu+0x76/0x3c0 [Jueves 10 de febrero 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs] [Jueves 10 de febrero 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [CIFS] [Jue 10 de febrero 12:59:07 2022] Deactivate_Locked_super+0x5d/0xd0 [justo 10 de febrero 12:59:07 2022] CIFS_SMB3_DO_MOUNT+0XAB9/0XBE0 [CIFS] [THU FEB 10 12:59:07 2022] SMB3 +0x1a0/0x2e0 [cifs] [jueves 10 de febrero 12:59:07 2022] vfs_get_tree+0x52/0x140 [jueves 10 de febrero 12:59:07 2022] path_mount+0x635/0x10c0 [jueves 10 de febrero 12:59:07 2022] __x64_sys_mount+0x1bf/0x210 [jueves 10 de febrero 12:59:07 2022] do_syscall_64+0x5c/0xc0 [jueves 10 de febrero 12:59:07 2022] Entry_SYSCALL_64_after_hwframe+0x44/0xae\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"fs/cifs/cifsfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"d17abdf7566566fc402c31899b353044a7ff3cf4\",\"lessThan\":\"546d60859ecf13380fcabcbeace53a5971493a2b\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d17abdf7566566fc402c31899b353044a7ff3cf4\",\"lessThan\":\"563431c1f3c8f2230e4a9c445fa23758742bc4f0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d17abdf7566566fc402c31899b353044a7ff3cf4\",\"lessThan\":\"3d6cc9898efdfb062efb74dc18cfc700e082f5d5\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"fs/cifs/cifsfs.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.11\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.11\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.27\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.16.13\",\"lessThanOrEqual\":\"5.16.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.17\",\"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:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"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: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\":\"2024-09-10T15:33:34.933209Z\",\"id\":\"CVE-2022-48919\",\"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-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"4.9.305\",\"matchCriteriaId\":\"2812DEB9-FC99-48E3-ABCB-F07B62FBBCA9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.10\",\"versionEndExcluding\":\"4.14.270\",\"matchCriteriaId\":\"51C0B6F2-A904-4FE6-B06B-CE26226B22B7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.15\",\"versionEndExcluding\":\"4.19.233\",\"matchCriteriaId\":\"B59A7E33-6262-458E-AC76-E8CC4E812344\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.20\",\"versionEndExcluding\":\"5.4.183\",\"matchCriteriaId\":\"76A7616E-E6B9-4A7F-AA7C-1D47F774215F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.104\",\"matchCriteriaId\":\"764998FC-D1F7-4BAA-BD56-A553C7AB8F08\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.27\",\"matchCriteriaId\":\"B3A8E092-3021-4A34-8DCE-B89D2238818B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.13\",\"matchCriteriaId\":\"B871B667-EDC0-435D-909E-E918D8D90995\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-04T19:47:48+00:00",
"cve": "CVE-2022-48919",
"id": "CVE-2022-48919",
"initial_release_date": "2022-01-01T00:00:00+00:00",
"product_status:fixed": "150",
"product_status:known_affected": "42",
"product_status:known_not_affected": "108",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: cifs: fix double free race when mount fails in cifs_get_root()",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-48919.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-48919\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T15:33:34.933209Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:15.716Z\"}}], \"cna\": {\"title\": \"cifs: fix double free race when mount fails in cifs_get_root()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:N - The vulnerable path is in the CIFS client during mount of a remote SMB share; a malicious SMB server can induce cifs_read_super()/cifs_get_root() failure after session/tree setup, triggering the buggy cleanup over the network.\\nAC:L - A single failed mount through out_super deterministically double-frees prepath immediately and frees cifs_sb/ctx while an RCU delayed_free remains pending; the attacker fully controls the failing server responses and needs no uncontrolled race.\\nPR:N - The attacker is the remote SMB server endpoint and needs no privileges on the victim client; client-side mount capability is part of the victim action, not attacker privilege.\\nUI:R - A victim must mount or otherwise initiate a CIFS/SMB3 connection to the attacker-controlled share; the server cannot reach cifs_smb3_do_mount without that client action.\\nS:U - The double-free/UAF impacts the local kernel CIFS client within the same security authority and does not cross a VM, IOMMU, or sandbox boundary.\\nC:H - This is a use-after-free/double-free of cifs_sb and its smb3_fs_context, enabling heap reuse and arbitrary read primitives per UAF exploitation.\\nI:H - The same double-free/UAF of heap objects (cifs_sb/ctx/prepath) enables heap spraying and arbitrary write or control-flow hijacking primitives.\\nA:H - The bug produces a kernel use-after-free (KASAN report in rcu_cblist_dequeue) that can oops/panic the system even without full exploitation.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"d17abdf7566566fc402c31899b353044a7ff3cf4\", \"lessThan\": \"546d60859ecf13380fcabcbeace53a5971493a2b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d17abdf7566566fc402c31899b353044a7ff3cf4\", \"lessThan\": \"563431c1f3c8f2230e4a9c445fa23758742bc4f0\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"d17abdf7566566fc402c31899b353044a7ff3cf4\", \"lessThan\": \"3d6cc9898efdfb062efb74dc18cfc700e082f5d5\", \"versionType\": \"git\"}], \"programFiles\": [\"fs/cifs/cifsfs.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.11\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.11\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.27\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.13\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"fs/cifs/cifsfs.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/546d60859ecf13380fcabcbeace53a5971493a2b\"}, {\"url\": \"https://git.kernel.org/stable/c/563431c1f3c8f2230e4a9c445fa23758742bc4f0\"}, {\"url\": \"https://git.kernel.org/stable/c/3d6cc9898efdfb062efb74dc18cfc700e082f5d5\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncifs: fix double free race when mount fails in cifs_get_root()\\n\\nWhen cifs_get_root() fails during cifs_smb3_do_mount() we call\\ndeactivate_locked_super() which eventually will call delayed_free() which\\nwill free the context.\\nIn this situation we should not proceed to enter the out: section in\\ncifs_smb3_do_mount() and free the same resources a second time.\\n\\n[Thu Feb 10 12:59:06 2022] BUG: KASAN: use-after-free in rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] Read of size 8 at addr ffff888364f4d110 by task swapper/1/0\\n\\n[Thu Feb 10 12:59:06 2022] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G OE 5.17.0-rc3+ #4\\n[Thu Feb 10 12:59:06 2022] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 12/17/2019\\n[Thu Feb 10 12:59:06 2022] Call Trace:\\n[Thu Feb 10 12:59:06 2022] \u003cIRQ\u003e\\n[Thu Feb 10 12:59:06 2022] dump_stack_lvl+0x5d/0x78\\n[Thu Feb 10 12:59:06 2022] print_address_description.constprop.0+0x24/0x150\\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] kasan_report.cold+0x7d/0x117\\n[Thu Feb 10 12:59:06 2022] ? rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] __asan_load8+0x86/0xa0\\n[Thu Feb 10 12:59:06 2022] rcu_cblist_dequeue+0x32/0x60\\n[Thu Feb 10 12:59:06 2022] rcu_core+0x547/0xca0\\n[Thu Feb 10 12:59:06 2022] ? call_rcu+0x3c0/0x3c0\\n[Thu Feb 10 12:59:06 2022] ? __this_cpu_preempt_check+0x13/0x20\\n[Thu Feb 10 12:59:06 2022] ? lock_is_held_type+0xea/0x140\\n[Thu Feb 10 12:59:06 2022] rcu_core_si+0xe/0x10\\n[Thu Feb 10 12:59:06 2022] __do_softirq+0x1d4/0x67b\\n[Thu Feb 10 12:59:06 2022] __irq_exit_rcu+0x100/0x150\\n[Thu Feb 10 12:59:06 2022] irq_exit_rcu+0xe/0x30\\n[Thu Feb 10 12:59:06 2022] sysvec_hyperv_stimer0+0x9d/0xc0\\n...\\n[Thu Feb 10 12:59:07 2022] Freed by task 58179:\\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\\n[Thu Feb 10 12:59:07 2022] kasan_set_track+0x25/0x30\\n[Thu Feb 10 12:59:07 2022] kasan_set_free_info+0x24/0x40\\n[Thu Feb 10 12:59:07 2022] ____kasan_slab_free+0x137/0x170\\n[Thu Feb 10 12:59:07 2022] __kasan_slab_free+0x12/0x20\\n[Thu Feb 10 12:59:07 2022] slab_free_freelist_hook+0xb3/0x1d0\\n[Thu Feb 10 12:59:07 2022] kfree+0xcd/0x520\\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0x149/0xbe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\\n\\n[Thu Feb 10 12:59:07 2022] Last potentially related work creation:\\n[Thu Feb 10 12:59:07 2022] kasan_save_stack+0x26/0x50\\n[Thu Feb 10 12:59:07 2022] __kasan_record_aux_stack+0xb6/0xc0\\n[Thu Feb 10 12:59:07 2022] kasan_record_aux_stack_noalloc+0xb/0x10\\n[Thu Feb 10 12:59:07 2022] call_rcu+0x76/0x3c0\\n[Thu Feb 10 12:59:07 2022] cifs_umount+0xce/0xe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] cifs_kill_sb+0xc8/0xe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] deactivate_locked_super+0x5d/0xd0\\n[Thu Feb 10 12:59:07 2022] cifs_smb3_do_mount+0xab9/0xbe0 [cifs]\\n[Thu Feb 10 12:59:07 2022] smb3_get_tree+0x1a0/0x2e0 [cifs]\\n[Thu Feb 10 12:59:07 2022] vfs_get_tree+0x52/0x140\\n[Thu Feb 10 12:59:07 2022] path_mount+0x635/0x10c0\\n[Thu Feb 10 12:59:07 2022] __x64_sys_mount+0x1bf/0x210\\n[Thu Feb 10 12:59:07 2022] do_syscall_64+0x5c/0xc0\\n[Thu Feb 10 12:59:07 2022] entry_SYSCALL_64_after_hwframe+0x44/0xae\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.27\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.16.13\", \"versionStartIncluding\": \"5.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.17\", \"versionStartIncluding\": \"5.11\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T08:52:54.791Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2022-48919\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T08:52:54.791Z\", \"dateReserved\": \"2024-08-21T06:06:23.295Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-08-22T01:32:43.390Z\", \"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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