{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2022-49336", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-02-26T02:08:31.539Z", "datePublished": "2025-02-26T02:10:55.234Z", "dateUpdated": "2026-08-05T08:54:46.930Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T08:54:46.930Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem\n\nWhen the mapping is already reaped the unmap must be a no-op, as we\nwould otherwise try to remove the mapping twice, corrupting the involved\ndata structures." } ], "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 DRM render-node ioctls (GEM_NEW/GEM_SUBMIT/handle close) on the etnaviv GPU driver; not exposed to network or adjacent attackers.\nAC:L - The race is between mapping reaping and GEM free; an unprivileged attacker controls both sides by concurrently submitting mappings that force IOVA reaping while closing buffers with idle mappings.\nPR:L - All relevant ioctls are DRM_RENDER_ALLOW on a DRIVER_RENDER device, so any unprivileged user with access to /dev/dri/renderD* (typical on etnaviv platforms) can trigger the path without root.\nUI:N - Exploitation requires only the attacker's own DRM ioctls and threads; no action by another user is needed.\nS:U - Impact is kernel memory corruption and privilege escalation within the same OS security authority; this is not a VM escape or system-IOMMU isolation bypass.\nC:H - Double list_del and double context kref_put yield list corruption and use-after-free of the IOMMU context, which can be leveraged for arbitrary kernel memory disclosure.\nI:H - The same UAF/list-corruption primitives enable heap manipulation and arbitrary kernel writes or control-flow hijacking, matching other DRM MMU UAF scores (e.g. CVE-2022-49359).\nA:H - Double-free/list corruption reliably causes kernel oops/panic even when not fully exploited for code execution." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/etnaviv/etnaviv_mmu.c" ], "versions": [ { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "19323b3671a85788569d15685c8f83a05ec48cbb", "status": "affected", "versionType": "git" }, { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "436cff507f2a41230baacc3e2ef1d3b2d2653f40", "status": "affected", "versionType": "git" }, { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "03bd455a79f69d97fee3e3b212ab754442f10e5c", "status": "affected", "versionType": "git" }, { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "461c0fdf9434188875da9f10cfc86065866bb797", "status": "affected", "versionType": "git" }, { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "64f4edec081cb7c97c5e928529d0e1b0dbbffb83", "status": "affected", "versionType": "git" }, { "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "lessThan": "e168c25526cd0368af098095c2ded4a008007e1b", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/gpu/drm/etnaviv/etnaviv_mmu.c" ], "versions": [ { "version": "4.5", "status": "affected" }, { "version": "0", "lessThan": "4.5", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.198", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.121", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.46", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.17.14", "lessThanOrEqual": "5.17.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.18.3", "lessThanOrEqual": "5.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.19", "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": "4.5", "versionEndExcluding": "5.4.198" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.10.121" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.15.46" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.17.14" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.18.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.5", "versionEndExcluding": "5.19" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/19323b3671a85788569d15685c8f83a05ec48cbb" }, { "url": "https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40" }, { "url": "https://git.kernel.org/stable/c/03bd455a79f69d97fee3e3b212ab754442f10e5c" }, { "url": "https://git.kernel.org/stable/c/461c0fdf9434188875da9f10cfc86065866bb797" }, { "url": "https://git.kernel.org/stable/c/64f4edec081cb7c97c5e928529d0e1b0dbbffb83" }, { "url": "https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b" } ], "title": "drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem", "x_generator": { "engine": "bippy-1.2.0" } } } }