{"id":"CVE-2022-50860","state":"PUBLISHED","title":"apparmor: Fix memleak in alloc_ns()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix memleak in alloc_ns()\n\nAfter changes in commit a1bd627b46d1 (\"apparmor: share profile name on\nreplacement\"), the hname member of struct aa_policy is not valid slab\nobject, but a subset of that, it can not be freed by kfree_sensitive(),\nuse aa_policy_destroy() to fix it.","publishedAt":"2025-12-30T12:15:33.859Z","updatedAt":"2026-08-05T08:59:49.893Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Linux"},"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"9a32aa87a25d800b2c6f47bc2749a7bfd9a486f3","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"5f509fa740b17307f0cba412485072f632d5af36","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"0250cf8d37bb5201a117177afd24dc73a1c81657","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"12695b4b76d437b9c0182a6f7dfb2248013a9daf","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"e9e6fa49dbab6d84c676666f3fe7d360497fd65b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/apparmor/policy_ns.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.13","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/apparmor/policy_ns.c"]}],"references":["https://git.kernel.org/stable/c/9a32aa87a25d800b2c6f47bc2749a7bfd9a486f3","https://git.kernel.org/stable/c/5f509fa740b17307f0cba412485072f632d5af36","https://git.kernel.org/stable/c/0250cf8d37bb5201a117177afd24dc73a1c81657","https://git.kernel.org/stable/c/12695b4b76d437b9c0182a6f7dfb2248013a9daf","https://git.kernel.org/stable/c/e9e6fa49dbab6d84c676666f3fe7d360497fd65b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50860.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50860","state":"PUBLISHED","datePublished":"2025-12-30T12:15:33.859Z","dateUpdated":"2026-08-05T08:59:49.893Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:07.135Z"},"containers":{"cna":{"title":"apparmor: Fix memleak in alloc_ns()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: Fix memleak in alloc_ns()\n\nAfter changes in commit a1bd627b46d1 (\"apparmor: share profile name on\nreplacement\"), the hname member of struct aa_policy is not valid slab\nobject, but a subset of that, it can not be freed by kfree_sensitive(),\nuse aa_policy_destroy() to fix it."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"9a32aa87a25d800b2c6f47bc2749a7bfd9a486f3","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"5f509fa740b17307f0cba412485072f632d5af36","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"0250cf8d37bb5201a117177afd24dc73a1c81657","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"12695b4b76d437b9c0182a6f7dfb2248013a9daf","versionType":"git"},{"version":"a1bd627b46d169268a0ee5960899fb5be960a317","status":"affected","lessThan":"e9e6fa49dbab6d84c676666f3fe7d360497fd65b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/apparmor/policy_ns.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.13","versionType":"semver"},{"version":"5.10.163","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.86","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.0.16","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1.2","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["security/apparmor/policy_ns.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9a32aa87a25d800b2c6f47bc2749a7bfd9a486f3"},{"url":"https://git.kernel.org/stable/c/5f509fa740b17307f0cba412485072f632d5af36"},{"url":"https://git.kernel.org/stable/c/0250cf8d37bb5201a117177afd24dc73a1c81657"},{"url":"https://git.kernel.org/stable/c/12695b4b76d437b9c0182a6f7dfb2248013a9daf"},{"url":"https://git.kernel.org/stable/c/e9e6fa49dbab6d84c676666f3fe7d360497fd65b"}],"metrics":[{"cvssV3_1":{"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"},"scenarios":[{"lang":"en","value":"AV:L - Reachable only via local AppArmor policy interfaces—mkdir on apparmorfs namespaces or write to .load/.replace—which call alloc_ns through __aa_create_ns/aa_prepare_ns; not via network or adjacent packet paths.\nAC:L - An attacker who can create namespaces can induce GFP_KERNEL failure in alloc_unconfined (e.g. memory pressure/cgroup limits) after aa_policy_init succeeds; once on fail_unconfined the bad kfree_sensitive is deterministic with no race outside attacker control.\nPR:L - Namespace creation requires CAP_MAC_ADMIN via aa_may_manage_policy, but with default unprivileged_userns_apparmor_policy=1 this is obtainable in nested user/AppArmor namespaces (e.g. unprivileged containers), matching prior AppArmor policy-load scoring.\nUI:N - The attacker triggers ns creation and the allocation-failure path themselves through policy admin operations; no separate victim action is required.\nS:U - Impact is confined to host-kernel slab corruption in AppArmor under the same OS security authority, with no VM, IOMMU, or sandbox boundary crossed.\nC:H - kfree_sensitive on the interior hname pointer performs an out-of-bounds zero (ksize returns the full slab object size from a mid-object pointer) and an invalid free, yielding slab corruption that can be leveraged for arbitrary read primitives.\nI:H - The same path is an out-of-bounds write via memzero_explicit plus an invalid free of a non-object-start pointer, which corrupts SLUB freelist metadata and is a well-established route to arbitrary write and control-flow hijack.\nA:H - Invalid free and adjacent-object corruption reliably cause kernel oops/BUG/panic under freelist hardening or subsequent realloc use, which is Availability High under kernel CVSS guidance."}]}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-05T08:59:49.893Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.13","versionEndExcluding":"5.10.163"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.13","versionEndExcluding":"5.15.86"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.13","versionEndExcluding":"6.0.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.13","versionEndExcluding":"6.1.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.13","versionEndExcluding":"6.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}