276 lines
13 KiB
JSON
276 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2024-46713",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2024-09-11T15:12:18.254Z",
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"datePublished": "2024-09-13T14:49:13.691Z",
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"dateUpdated": "2026-08-05T11:38:06.321Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-05T11:38:06.321Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nperf/aux: Fix AUX buffer serialization\n\nOle reported that event->mmap_mutex is strictly insufficient to\nserialize the AUX buffer, add a per RB mutex to fully serialize it.\n\nNote that in the lock order comment the perf_event::mmap_mutex order\nwas already wrong, that is, it nesting under mmap_lock is not new with\nthis patch."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - The bug is triggered purely through the local perf_event_open(2) syscall plus mmap/munmap on the resulting file descriptor; there is no network or remote path to the perf AUX buffer code.\nAC:L - The attacker controls both sides of the race, spawning two threads that concurrently mmap and close the same shared AUX buffer (linked via PERF_EVENT_IOC_SET_OUTPUT), and can retry freely, so triggering the unserialized window is reliable.\nPR:L - An unprivileged local user can open an AUX-capable per-task perf event (e.g. self-tracing) under common perf_event_paranoid settings and set up the shared ring buffer; no real root or init-namespace admin capability is required.\nUI:N - The attacker performs all syscalls itself; no victim action or interaction is needed to trigger the race.\nS:U - The corruption stays within the kernel's own security authority; there is no crossing of a VM, IOMMU, or sandbox boundary.\nC:H - The race yields a use-after-free of freed AUX kernel heap pages, which can be reallocated and read back, giving an attacker control over freed object contents and enabling kernel memory disclosure.\nI:H - The UAF/double-free on AUX pages and rb refcount corruption provides a write primitive over reclaimed kernel heap memory, exploitable via heap grooming for arbitrary writes and control-flow hijacking.\nA:H - The use-after-free and refcount underflow reliably corrupt kernel memory, causing oops/panic and full denial of service even when not fully weaponized."
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}
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]
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/events/core.c",
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"kernel/events/internal.h",
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"kernel/events/ring_buffer.c"
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],
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"versions": [
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "7882923f1cb88dc1a17f2bf0c81b1fc80d44db82",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "52d13d224fdf1299c8b642807fa1ea14d693f5ff",
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"status": "affected",
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},
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "c4b69bee3f4ef76809288fe6827bc14d4ae788ef",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "b9b6882e243b653d379abbeaa64a500182aba370",
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"status": "affected",
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"versionType": "git"
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{
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"version": "45bfb2e50471abbbfd83d40d28c986078b0d24ff",
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"lessThan": "2ab9d830262c132ab5db2f571003d80850d56b2a",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"kernel/events/core.c",
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"kernel/events/internal.h",
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"kernel/events/ring_buffer.c"
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],
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"versions": [
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{
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"version": "4.1",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "4.1",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.10.226",
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"lessThanOrEqual": "5.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "5.15.167",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.110",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.51",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.10.10",
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"lessThanOrEqual": "6.10.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.11",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "4.1",
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"versionEndExcluding": "5.10.226"
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},
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/7882923f1cb88dc1a17f2bf0c81b1fc80d44db82"
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},
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{
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"url": "https://git.kernel.org/stable/c/52d13d224fdf1299c8b642807fa1ea14d693f5ff"
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},
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{
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"url": "https://git.kernel.org/stable/c/9dc7ad2b67772cfb94ceb3b0c9c4023c2463215d"
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},
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{
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"url": "https://git.kernel.org/stable/c/c4b69bee3f4ef76809288fe6827bc14d4ae788ef"
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},
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{
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"url": "https://git.kernel.org/stable/c/b9b6882e243b653d379abbeaa64a500182aba370"
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},
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{
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"url": "https://git.kernel.org/stable/c/2ab9d830262c132ab5db2f571003d80850d56b2a"
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}
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],
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"title": "perf/aux: Fix AUX buffer serialization",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2024-09-29T14:58:57.910208Z",
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"id": "CVE-2024-46713",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-29T14:59:13.207Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
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},
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{
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"url": "https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html"
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}
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"dateUpdated": "2025-11-03T22:16:42.290Z"
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}
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}
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} |