230 lines
12 KiB
JSON
230 lines
12 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-2023-54254",
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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": "2025-12-30T12:06:44.515Z",
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"datePublished": "2025-12-30T12:15:50.163Z",
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"dateUpdated": "2026-10-15T21:41:43.208Z"
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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": "2026-08-05T09:18:27.491Z"
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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/ttm: Don't leak a resource on eviction error\n\nOn eviction errors other than -EMULTIHOP we were leaking a resource.\nFix.\n\nv2:\n- Avoid yet another goto (Andi Shyti)"
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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 vulnerable path is reached only through DRM ioctls (GEM create / command submission / buffer validation) on a local device node such as /dev/dri/renderD128. There is no network-facing consumer of ttm_bo_evict().\nAC:L - The attacker controls both preconditions: it fills VRAM/GTT with its own BOs to force the eviction path, then delivers a signal to its own ioctl thread so the interruptible wait inside the driver move callback returns -ERESTARTSYS, a non-EMULTIHOP error that leaks the resource. This is deterministic and can be repeated in a tight loop.\nPR:L - An ordinary unprivileged local user needs only an open FD on a DRM render node, which is granted to the render/video group on desktops, to every GPU-using app on Android and ChromeOS, and to containers with GPU passthrough. No capability or root access is involved.\nUI:N - The attacking process drives allocation, eviction and signal delivery entirely on its own. No action by any other user is required.\nS:U - The leaked resource, the dangling res->bo pointer, and all subsequent corruption remain within the kernel's own security authority. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - The orphaned ttm_resource retains a dangling res->bo to a freed ttm_buffer_object that later LRU walkers dereference without any validity check, giving a use-after-free whose freed-object contents the attacker can groom via heap spray to read kernel memory through the bo->base.resv / bo->bdev / bo->resource pointer chains.\nI:H - The same use-after-free yields write and control-flow primitives: ttm_bo_evict_swapout_allowable() calls dma_resv_trylock() through an attacker-controlled bo->base.resv pointer and indirect-calls bo->bdev->funcs->eviction_valuable() read from reclaimed slab memory.\nA:H - Each triggered error permanently leaks a VRAM/GTT range and an LRU entry, so repeated invocation exhausts GPU memory device-wide and denies service to all users including the display server; additionally the never-empty LRU makes ttm_resource_manager_evict_all() spin forever at suspend/unload, and the use-after-free crashes the kernel."
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}
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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/ttm/ttm_bo.c"
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],
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"version": "5.14.6",
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"lessThan": "5.15",
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"status": "affected",
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"versionType": "semver"
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"defaultStatus": "affected",
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"lessThanOrEqual": "5.15.*",
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"status": "unaffected",
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},
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"version": "6.1.43",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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},
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{
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"version": "6.4.5",
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"lessThanOrEqual": "6.4.*",
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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": "6.5",
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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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"cpeApplicability": [
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/7738335d73d0686ec8995e0448e5d1b48cffb2a4"
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},
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{
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"url": "https://git.kernel.org/stable/c/e9c44738cb1f537b177cc1beabcf6913690460cd"
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},
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{
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"url": "https://git.kernel.org/stable/c/6aea0032380bbb1efebd598ad733d16925167921"
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{
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"url": "https://git.kernel.org/stable/c/e8188c461ee015ba0b9ab2fc82dbd5ebca5a5532"
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}
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],
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"title": "drm/ttm: Don't leak a resource on eviction error",
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"type": "ssvc",
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"content": {
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"id": "CVE-2023-54254",
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"role": "CISA Coordinator",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "total"
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],
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"version": "2.0.3",
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"timestamp": "2026-10-15T21:39:48.494148Z"
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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