221 lines
10 KiB
JSON
221 lines
10 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-2020-36788",
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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": "2024-02-26T17:07:27.435Z",
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"datePublished": "2024-05-21T15:03:27.915Z",
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"dateUpdated": "2026-08-05T08:44:32.011Z"
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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": "2026-08-05T08:44:32.011Z"
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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\ndrm/nouveau: avoid a use-after-free when BO init fails\n\nnouveau_bo_init() is backed by ttm_bo_init() and ferries its return code\nback to the caller. On failures, ttm_bo_init() invokes the provided\ndestructor which should de-initialize and free the memory.\n\nThus, when nouveau_bo_init() returns an error the gem object has already\nbeen released and the memory freed by nouveau_bo_del_ttm()."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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"baseScore": 7.8,
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"baseSeverity": "HIGH"
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},
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"scenarios": [
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{
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"lang": "en",
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"value": "AV:L - Reachable only via local DRM ioctls (NOUVEAU_GEM_NEW / related paths) on a Nouveau render or primary node; not via network packets or adjacent wireless protocols.\nAC:L - The UAF is a deterministic error-path bug: an attacker who can open the DRM device can force nouveau_bo_init()/ttm_bo_init() failure (e.g., exhausting memory with large GEM allocations) and reliably hit the double-put.\nPR:L - NOUVEAU_GEM_NEW is DRM_RENDER_ALLOW, so any unprivileged local user with access to /dev/dri/renderD* can invoke it without root or CAP_SYS_ADMIN.\nUI:N - The attacker opens the render node and issues the ioctl themselves; no separate victim action is required.\nS:U - Impact is confined to the host kernel privilege boundary (local privilege escalation / memory corruption); it does not cross VM, IOMMU, or other security authorities.\nC:H - Use-after-free of the nouveau_bo/TTM object enables heap reuse and arbitrary kernel memory reads once the freed slab is reclaimed.\nI:H - The post-free ttm_bo_put path operates on attacker-influencable freed object state (including destroy callback machinery), enabling arbitrary write / control-flow hijacking.\nA:H - The UAF/double-free reliably produces kernel oops, panic, or hang even without full exploitation."
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}
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]
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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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"drivers/gpu/drm/nouveau/nouveau_gem.c"
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],
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"versions": [
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{
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"version": "019cbd4a4feb3aa3a917d78e7110e3011bbff6d5",
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"lessThan": "f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96",
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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": "019cbd4a4feb3aa3a917d78e7110e3011bbff6d5",
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"lessThan": "548f2ff8ea5e0ce767ae3418d1ec5308990be87d",
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"status": "affected",
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},
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"lessThan": "bcf34aa5082ee2343574bc3f4d1c126030913e54",
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"status": "affected",
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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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"drivers/gpu/drm/nouveau/nouveau_gem.c"
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],
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"versions": [
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{
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"version": "5.4",
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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": "5.4",
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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": "5.10.73",
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"lessThanOrEqual": "5.10.*",
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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": "5.14.12",
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"lessThanOrEqual": "5.14.*",
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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": "5.15",
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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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"nodes": [
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"operator": "OR",
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"cpeMatch": [
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.4",
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"versionEndExcluding": "5.10.73"
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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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"references": [
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"url": "https://git.kernel.org/stable/c/f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96"
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},
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{
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"url": "https://git.kernel.org/stable/c/548f2ff8ea5e0ce767ae3418d1ec5308990be87d"
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},
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{
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"url": "https://git.kernel.org/stable/c/bcf34aa5082ee2343574bc3f4d1c126030913e54"
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}
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],
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"title": "drm/nouveau: avoid a use-after-free when BO init fails",
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"title": "CISA ADP Vulnrichment",
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"type": "ssvc",
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"content": {
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"id": "CVE-2020-36788",
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"role": "CISA Coordinator",
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"options": [
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"Exploitation": "none"
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{
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"Automatable": "no"
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"Technical Impact": "partial"
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"version": "2.0.3",
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"timestamp": "2024-05-23T19:01:06.801476Z"
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"dateUpdated": "2024-06-04T17:12:28.462Z"
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"title": "CVE Program Container",
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