{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-50860", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-30T12:06:07.135Z", "datePublished": "2025-12-30T12:15:33.859Z", "dateUpdated": "2026-08-05T08:59:49.893Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:59:49.893Z" }, "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." } ], "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." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/apparmor/policy_ns.c" ], "versions": [ { "version": "a1bd627b46d169268a0ee5960899fb5be960a317", "lessThan": "9a32aa87a25d800b2c6f47bc2749a7bfd9a486f3", "status": "affected", "versionType": "git" }, { "version": "a1bd627b46d169268a0ee5960899fb5be960a317", "lessThan": "5f509fa740b17307f0cba412485072f632d5af36", "status": "affected", "versionType": "git" }, { "version": "a1bd627b46d169268a0ee5960899fb5be960a317", "lessThan": "0250cf8d37bb5201a117177afd24dc73a1c81657", "status": "affected", "versionType": "git" }, { "version": "a1bd627b46d169268a0ee5960899fb5be960a317", "lessThan": "12695b4b76d437b9c0182a6f7dfb2248013a9daf", "status": "affected", "versionType": "git" }, { "version": "a1bd627b46d169268a0ee5960899fb5be960a317", "lessThan": "e9e6fa49dbab6d84c676666f3fe7d360497fd65b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "security/apparmor/policy_ns.c" ], "versions": [ { "version": "4.13", "status": "affected" }, { "version": "0", "lessThan": "4.13", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.163", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.86", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.0.16", "lessThanOrEqual": "6.0.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.2", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "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" } ] } ] } ], "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" } ], "title": "apparmor: Fix memleak in alloc_ns()", "x_generator": { "engine": "bippy-1.2.0" } } } }