CVE-2022-49336

{"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"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["drivers/gpu/drm/etnaviv/etnaviv_mmu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "19323b3671a85788569d15685c8f83a05ec48cbb", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}, {"lessThan": "436cff507f2a41230baacc3e2ef1d3b2d2653f40", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}, {"lessThan": "03bd455a79f69d97fee3e3b212ab754442f10e5c", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}, {"lessThan": "461c0fdf9434188875da9f10cfc86065866bb797", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}, {"lessThan": "64f4edec081cb7c97c5e928529d0e1b0dbbffb83", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}, {"lessThan": "e168c25526cd0368af098095c2ded4a008007e1b", "status": "affected", "version": "a8c21a5451d831e67b7a6fb910f9ca8bc7b43554", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["drivers/gpu/drm/etnaviv/etnaviv_mmu.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.5"}, {"lessThan": "4.5", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "5.4.*", "status": "unaffected", "version": "5.4.198", "versionType": "semver"}, {"lessThanOrEqual": "5.10.*", "status": "unaffected", "version": "5.10.121", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.46", "versionType": "semver"}, {"lessThanOrEqual": "5.17.*", "status": "unaffected", "version": "5.17.14", "versionType": "semver"}, {"lessThanOrEqual": "5.18.*", "status": "unaffected", "version": "5.18.3", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "5.19", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "0FBD3258-24F4-4576-BF8D-CC6649E04DE3", "versionEndExcluding": "5.4.198", "versionStartIncluding": "4.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "34ACD872-E5BC-401C-93D5-B357A62426E0", "versionEndExcluding": "5.10.121", "versionStartIncluding": "5.5", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "20D41697-0E8B-4B7D-8842-F17BF2AA21E1", "versionEndExcluding": "5.15.46", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "15E2DD33-2255-4B76-9C15-04FF8CBAB252", "versionEndExcluding": "5.17.14", "versionStartIncluding": "5.16", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "8E122216-2E9E-4B3E-B7B8-D575A45BA3C2", "versionEndExcluding": "5.18.3", "versionStartIncluding": "5.18", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/etnaviv: comprobar mapeo cosechado en etnaviv_iommu_unmap_gem Cuando el mapeo ya fue cosechado, anular el mapeo debe ser una operaci\u00f3n nula, ya que de lo contrario intentar\u00edamos eliminar el mapeo dos veces, corrompiendo las estructuras de datos involucradas."}], "id": "CVE-2022-49336", "lastModified": "2026-08-04T10:17:44.753", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2025-02-26T07:01:10.370", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/03bd455a79f69d97fee3e3b212ab754442f10e5c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/19323b3671a85788569d15685c8f83a05ec48cbb"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/436cff507f2a41230baacc3e2ef1d3b2d2653f40"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/461c0fdf9434188875da9f10cfc86065866bb797"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/64f4edec081cb7c97c5e928529d0e1b0dbbffb83"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e168c25526cd0368af098095c2ded4a008007e1b"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: drm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem", "id": "2348130", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2348130"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/etnaviv: check for reaped mapping in etnaviv_iommu_unmap_gem\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."], "name": "CVE-2022-49336", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-02-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2022-49336\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-49336\nhttps://lore.kernel.org/linux-cve-announce/2025022640-CVE-2022-49336-bc56@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2025-07-12T22:23:49.241126+00:00", "updated": "2025-07-12T22:23:49.241176+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}