172 lines
9.1 KiB
JSON
172 lines
9.1 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-2024-44978",
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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": "2024-08-21T05:34:56.670Z",
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"datePublished": "2024-09-04T19:54:29.559Z",
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"dateUpdated": "2026-08-05T11:37:25.547Z"
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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": "2026-08-05T11:37:25.547Z"
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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/xe: Free job before xe_exec_queue_put\n\nFree job depends on job->vm being valid, the last xe_exec_queue_put can\ndestroy the VM. Prevent UAF by freeing job before xe_exec_queue_put.\n\n(cherry picked from commit 32a42c93b74c8ca6d0915ea3eba21bceff53042f)"
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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 vulnerability is reached only through DRM ioctls on the local Intel Xe render node (/dev/dri/renderD*) — XE_EXEC, XE_EXEC_QUEUE_CREATE/DESTROY — requiring an open file descriptor on the device. There is no remote or adjacent-network path to xe_sched_job_destroy().\nAC:L - The attacker controls every input to the bug: they create the VM and exec queue, submit the jobs, and destroy the queue so the final job reference triggers the put-before-free, and can drive the device into the wedged state to hit the fully synchronous kfree path. Where the free is deferred to a workqueue, the attacker owns both sides of the race and can retry indefinitely with heap grooming.\nPR:L - All ioctls on the path are marked DRM_RENDER_ALLOW with no DRM_AUTH, no DRM master requirement, and no capability check, so an ordinary unprivileged user with render-node access (default on desktop distros via logind ACLs, and common in GPU-enabled containers) can trigger it. No root or CAP_SYS_ADMIN is needed.\nUI:N - The attacker triggers the entire sequence from their own process with no victim action required. No file opening, mount, or interaction by another user is involved.\nS:U - The corruption is confined to kernel heap memory managed by the same kernel security authority as the attacking process. No hypervisor, IOMMU, or sandbox boundary is crossed.\nC:H - This is a use-after-free of struct xe_exec_queue plus a dereference of the already-freed xe_vm through a dangling pointer, and the attacker can reallocate the freed queue to control the pointer that is then read. Per kernel UAF guidance this yields attacker-influenced kernel memory disclosure.\nI:H - The stale q->width read selects which kmem_cache the job is returned to, so a sprayed replacement object produces a wrong-cache kmem_cache_free() and SLUB freelist corruption — a write primitive leveragable for control-flow hijack and privilege escalation. Per guidance, use-after-free is scored High for integrity.\nA:H - Even unexploited, dereferencing the freed exec queue and freed VM causes a kernel oops or panic, and mismatched slab frees corrupt allocator state leading to later crashes. Any unprivileged user with render-node access can repeat this at will."
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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/xe/xe_sched_job.c"
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],
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"versions": [
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{
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"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
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"lessThan": "98aa0330f200b9b8fb9e1298e006eda57a13351c",
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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": "dd08ebf6c3525a7ea2186e636df064ea47281987",
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"lessThan": "9e7f30563677fbeff62d368d5d2a5ac7aaa9746a",
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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/xe/xe_sched_job.c"
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],
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"versions": [
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{
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"version": "6.8",
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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": "6.8",
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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": "6.10.7",
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"lessThanOrEqual": "6.10.*",
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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": "6.11",
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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": "6.8",
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"versionEndExcluding": "6.10.7"
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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": "6.8",
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"versionEndExcluding": "6.11"
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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/98aa0330f200b9b8fb9e1298e006eda57a13351c"
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},
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{
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"url": "https://git.kernel.org/stable/c/9e7f30563677fbeff62d368d5d2a5ac7aaa9746a"
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}
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],
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"title": "drm/xe: Free job before xe_exec_queue_put",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"id": "CVE-2024-44978",
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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": "partial"
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}
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],
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"version": "2.0.3",
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"timestamp": "2024-09-10T15:20:40.351052Z"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2024-09-12T17:33:03.653Z"
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}
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}
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]
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}
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} |