242 lines
11 KiB
JSON
242 lines
11 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-2026-90247",
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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": "2026-09-11T19:38:34.795Z",
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"datePublished": "2026-09-17T16:07:49.444Z",
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"dateUpdated": "2026-10-30T12:34:55.059Z"
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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": "2026-10-30T12:34:55.059Z"
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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\nbpf: Fix mmap_lock leak in irq_work path\n\nstack_map_get_build_id_offset() introduced a per-CPU irq_work to defer\nmmap_read_unlock() from NMI context, and bpf_find_vma() later reused the\nsame mmap_unlock_work. Both callers only check whether the work is busy\nbefore taking mmap_lock, so a nested caller can reuse the slot before the\nfirst caller queues it. Two read locks may then be acquired while only one\ndeferred unlock runs, leaking a read lock and blocking exit_mmap().\n\nReserve the per-CPU slot before mmap_read_trylock(). Use the same wrapper\nin stackmap and bpf_find_vma() so both callers release the reservation on\ntrylock failure. Keep rejecting the slot while the irq_work remains busy.\nRelease it after the irq_work callback unlocks the mm."
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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/bpf/mmap_unlock_work.h",
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"kernel/bpf/stackmap.c",
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"kernel/bpf/task_iter.c"
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],
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"versions": [
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{
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"version": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "d6d091873e12d1de36d7228c4f452e6cace3a23e",
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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": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "b6c9daf6097f9b39162b8e736a6ac7caf5ef6fc8",
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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": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "931f62311c058d79f29548f20943969bb441ce87",
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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": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "a052ad5edccf5319f50ed955de4368f8318a9f20",
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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": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "051f2da26ce377f683b938a3382e0f16d02f3139",
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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": "eac9153f2b584c702cea02c1f1a57d85aa9aea42",
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"lessThan": "fa9dcacdcdf487f0ffef64bf67622f1caed509f1",
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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": "a7f4da875c16f3b8bef0d9ec67528111045bfcd8",
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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": "f1838da73cccb238b8be4ef464fce0168dc7ba84",
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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": "4.19.92",
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"lessThan": "4.20",
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"status": "affected",
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"versionType": "semver"
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},
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{
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"version": "5.4.7",
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"lessThan": "5.5",
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"status": "affected",
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"versionType": "semver"
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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/bpf/mmap_unlock_work.h",
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"kernel/bpf/stackmap.c",
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"kernel/bpf/task_iter.c"
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],
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"versions": [
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{
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"version": "5.5",
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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": "5.5",
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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": "6.1.191",
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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": "6.6.160",
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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": "6.12.114",
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"lessThanOrEqual": "6.12.*",
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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": "6.18.52",
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"lessThanOrEqual": "6.18.*",
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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": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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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{
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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": "5.5",
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"versionEndExcluding": "6.1.191"
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},
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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": "5.5",
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"versionEndExcluding": "6.6.160"
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},
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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": "5.5",
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"versionEndExcluding": "6.12.114"
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},
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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": "5.5",
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"versionEndExcluding": "6.18.52"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.5",
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"versionEndExcluding": "7.2.6"
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},
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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": "5.5",
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"versionEndExcluding": "7.3"
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},
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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": "4.19.92"
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},
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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": "5.4.7"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/d6d091873e12d1de36d7228c4f452e6cace3a23e"
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},
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{
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"url": "https://git.kernel.org/stable/c/b6c9daf6097f9b39162b8e736a6ac7caf5ef6fc8"
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},
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{
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"url": "https://git.kernel.org/stable/c/931f62311c058d79f29548f20943969bb441ce87"
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},
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{
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"url": "https://git.kernel.org/stable/c/a052ad5edccf5319f50ed955de4368f8318a9f20"
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},
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{
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"url": "https://git.kernel.org/stable/c/051f2da26ce377f683b938a3382e0f16d02f3139"
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},
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{
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"url": "https://git.kernel.org/stable/c/fa9dcacdcdf487f0ffef64bf67622f1caed509f1"
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}
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],
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"title": "bpf: Fix mmap_lock leak in irq_work path",
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"x_generator": {
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} |