164 lines
8.5 KiB
JSON
164 lines
8.5 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-2025-40329",
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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": "2025-04-16T07:20:57.186Z",
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"datePublished": "2025-12-09T04:09:46.156Z",
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"dateUpdated": "2026-05-11T21:47:15.504Z"
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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": "2026-05-11T21:47:15.504Z"
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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/sched: Fix deadlock in drm_sched_entity_kill_jobs_cb\n\nThe Mesa issue referenced below pointed out a possible deadlock:\n\n[ 1231.611031] Possible interrupt unsafe locking scenario:\n\n[ 1231.611033] CPU0 CPU1\n[ 1231.611034] ---- ----\n[ 1231.611035] lock(&xa->xa_lock#17);\n[ 1231.611038] local_irq_disable();\n[ 1231.611039] lock(&fence->lock);\n[ 1231.611041] lock(&xa->xa_lock#17);\n[ 1231.611044] <Interrupt>\n[ 1231.611045] lock(&fence->lock);\n[ 1231.611047]\n *** DEADLOCK ***\n\nIn this example, CPU0 would be any function accessing job->dependencies\nthrough the xa_* functions that don't disable interrupts (eg:\ndrm_sched_job_add_dependency(), drm_sched_entity_kill_jobs_cb()).\n\nCPU1 is executing drm_sched_entity_kill_jobs_cb() as a fence signalling\ncallback so in an interrupt context. It will deadlock when trying to\ngrab the xa_lock which is already held by CPU0.\n\nReplacing all xa_* usage by their xa_*_irq counterparts would fix\nthis issue, but Christian pointed out another issue: dma_fence_signal\ntakes fence.lock and so does dma_fence_add_callback.\n\n dma_fence_signal() // locks f1.lock\n -> drm_sched_entity_kill_jobs_cb()\n -> foreach dependencies\n -> dma_fence_add_callback() // locks f2.lock\n\nThis will deadlock if f1 and f2 share the same spinlock.\n\nTo fix both issues, the code iterating on dependencies and re-arming them\nis moved out to drm_sched_entity_kill_jobs_work().\n\n[phasta: commit message nits]"
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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/scheduler/sched_entity.c"
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],
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"versions": [
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{
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"version": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
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"lessThan": "70150b9443dddf02157d821c68abf438f55a2e8e",
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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": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
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"lessThan": "0d63031ee4a57be0252cb9a4e09ae921c75cece9",
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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": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
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"lessThan": "3e8ada4fd838e3fd2cca94000dac054f3a347c01",
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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": "2fdb8a8f07c2f1353770a324fd19b8114e4329ac",
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"lessThan": "487df8b698345dd5a91346335f05170ed5f29d4e",
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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/scheduler/sched_entity.c"
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],
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"versions": [
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{
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"version": "6.2",
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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": "6.2",
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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": "6.6.117",
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"lessThanOrEqual": "6.6.*",
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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": "6.12.58",
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"lessThanOrEqual": "6.12.*",
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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": "6.17.8",
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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",
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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": "6.2",
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"versionEndExcluding": "6.6.117"
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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": "6.2",
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"versionEndExcluding": "6.12.58"
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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": "6.2",
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"versionEndExcluding": "6.17.8"
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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": "6.2",
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"versionEndExcluding": "6.18"
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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/70150b9443dddf02157d821c68abf438f55a2e8e"
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},
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{
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"url": "https://git.kernel.org/stable/c/0d63031ee4a57be0252cb9a4e09ae921c75cece9"
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},
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{
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"url": "https://git.kernel.org/stable/c/3e8ada4fd838e3fd2cca94000dac054f3a347c01"
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},
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{
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"url": "https://git.kernel.org/stable/c/487df8b698345dd5a91346335f05170ed5f29d4e"
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}
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],
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"title": "drm/sched: Fix deadlock in drm_sched_entity_kill_jobs_cb",
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"x_generator": {
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