180 lines
9.5 KiB
JSON
180 lines
9.5 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-2025-68735",
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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": "2025-12-24T10:30:51.028Z",
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"datePublished": "2025-12-24T12:09:34.364Z",
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"dateUpdated": "2026-10-21T12:38:25.918Z"
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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": "2026-10-21T12:38:25.918Z"
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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/panthor: Prevent potential UAF in group creation\n\nThis commit prevents the possibility of a use after free issue in the\nGROUP_CREATE ioctl function, which arose as pointer to the group is\naccessed in that ioctl function after storing it in the Xarray.\nA malicious userspace can second guess the handle of a group and try\nto call GROUP_DESTROY ioctl from another thread around the same time\nas GROUP_CREATE ioctl.\n\nTo prevent the use after free exploit, this commit uses a mark on an\nentry of group pool Xarray which is added just before returning from\nthe GROUP_CREATE ioctl function. The mark is checked for all ioctls\nthat specify the group handle and so userspace won't be abe to delete\na group that isn't marked yet.\n\nv2: Add R-bs and fixes tags"
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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 - The flaw is reached through concurrent GROUP_CREATE and GROUP_DESTROY ioctls on a Panthor DRM device node, making it locally exploitable.\nAC:L - The attacker controls both racing threads, handles are predictably allocated from a 1–128 range, and attacker-controlled queue allocations widen the repeatable race window.\nPR:L - Both ioctls have DRM_RENDER_ALLOW, and low or medium group priorities require no capability; a basic unprivileged process with render-node access suffices.\nUI:N - The attacker directly issues the concurrent ioctls without requiring any action from another user.\nS:U - The corruption affects the host kernel within the same security authority and represents standard local privilege escalation, not a VM or IOMMU-boundary escape.\nC:H - The group can be freed and reclaimed while creation continues dereferencing stale pointers, providing exploitable heap corruption that can enable arbitrary kernel-memory disclosure.\nI:H - Post-free operations write queue pointers, counters, list links, locks, and task metadata into reclaimed memory, enabling arbitrary corruption and potential control-flow hijacking.\nA:H - Concurrent cleanup can free the group and associated resources while they remain in use, allowing repeatable kernel crashes, oopses, or panics."
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}
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]
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}
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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/panthor/panthor_sched.c"
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],
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"versions": [
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{
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"version": "de85488138247d034eb3241840424a54d660926b",
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"lessThan": "c6bbec068a9accd6f1df05f3df9a5254c99292ee",
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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": "de85488138247d034eb3241840424a54d660926b",
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"lessThan": "deb8b2491f6b9882ae02d7dc2651c7bf4f3b7e05",
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{
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"drivers/gpu/drm/panthor/panthor_sched.c"
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],
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"versions": [
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{
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"version": "6.10",
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"status": "affected"
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},
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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": "6.12.114",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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},
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{
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"version": "6.17.13",
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"lessThanOrEqual": "6.17.*",
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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": "6.18.2",
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"lessThanOrEqual": "6.18.*",
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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": "6.19",
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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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"versionStartIncluding": "6.10",
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/c6bbec068a9accd6f1df05f3df9a5254c99292ee"
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},
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{
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"url": "https://git.kernel.org/stable/c/deb8b2491f6b9882ae02d7dc2651c7bf4f3b7e05"
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},
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{
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{
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"url": "https://git.kernel.org/stable/c/eec7e23d848d2194dd8791fcd0f4a54d4378eecd"
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}
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],
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"title": "drm/panthor: Prevent potential UAF in group creation",
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