122 lines
6.0 KiB
JSON
122 lines
6.0 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-2026-23034",
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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": "2026-01-13T15:37:45.942Z",
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"datePublished": "2026-01-31T11:42:29.137Z",
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"dateUpdated": "2026-05-11T21:58:43.438Z"
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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": "2026-05-11T21:58:43.438Z"
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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/amdgpu/userq: Fix fence reference leak on queue teardown v2\n\nThe user mode queue keeps a pointer to the most recent fence in\nuserq->last_fence. This pointer holds an extra dma_fence reference.\n\nWhen the queue is destroyed, we free the fence driver and its xarray,\nbut we forgot to drop the last_fence reference.\n\nBecause of the missing dma_fence_put(), the last fence object can stay\nalive when the driver unloads. This leaves an allocated object in the\namdgpu_userq_fence slab cache and triggers\n\nThis is visible during driver unload as:\n\n BUG amdgpu_userq_fence: Objects remaining on __kmem_cache_shutdown()\n kmem_cache_destroy amdgpu_userq_fence: Slab cache still has objects\n Call Trace:\n kmem_cache_destroy\n amdgpu_userq_fence_slab_fini\n amdgpu_exit\n __do_sys_delete_module\n\nFix this by putting userq->last_fence and clearing the pointer during\namdgpu_userq_fence_driver_free().\n\nThis makes sure the fence reference is released and the slab cache is\nempty when the module exits.\n\nv2: Update to only release userq->last_fence with dma_fence_put()\n (Christian)\n\n(cherry picked from commit 8e051e38a8d45caf6a866d4ff842105b577953bb)"
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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/amd/amdgpu/amdgpu_userq_fence.c"
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],
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"versions": [
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{
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"version": "edc762a51c7181d6fe1e0837e2eb69afb406f98e",
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"lessThan": "e1a30e1ab33fc522785d04bbf7e1b13a5c5c9175",
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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": "edc762a51c7181d6fe1e0837e2eb69afb406f98e",
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"lessThan": "b2426a211dba6432e32a2e70e9183c6e134475c6",
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"status": "affected",
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"versionType": "git"
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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": "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/amd/amdgpu/amdgpu_userq_fence.c"
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],
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"versions": [
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{
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"version": "6.16",
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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": "6.16",
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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": "6.18.7",
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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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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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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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"versionStartIncluding": "6.16",
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"versionEndExcluding": "6.18.7"
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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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"versionStartIncluding": "6.16",
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"versionEndExcluding": "6.19"
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}
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]
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}
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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/e1a30e1ab33fc522785d04bbf7e1b13a5c5c9175"
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},
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{
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"url": "https://git.kernel.org/stable/c/b2426a211dba6432e32a2e70e9183c6e134475c6"
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}
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],
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"title": "drm/amdgpu/userq: Fix fence reference leak on queue teardown v2",
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"x_generator": {
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"engine": "bippy-1.2.0"
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} |