163 lines
8.5 KiB
JSON
163 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-2026-72331",
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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": "2026-08-09T03:40:39.919Z",
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"datePublished": "2026-08-15T05:55:41.196Z",
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"dateUpdated": "2026-10-15T10:08:34.107Z"
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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": "2026-10-15T10:08:34.107Z"
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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\naccel/amdxdna: Fix VMA access race\n\naie2_populate_range() and amdxdna_umap_release() access a saved VMA\npointer that may have already been freed, leading to a potential\nuse-after-free.\n\nRemove the VMA accesses from these functions to avoid the race."
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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 bug is reached only via local syscalls on the AMD XDNA DRM accel render node (open, DRM_IOCTL_AMDXDNA_CREATE_BO/EXEC_CMD, mmap/munmap) in drivers/accel/amdxdna; there is no network-facing handler.\nAC:L - The UAF is a mmap/munmap versus deferred amdxdna_umap_release/aie2_populate_range race; a local attacker controls both sides with concurrent threads and can reliably trigger MMU_NOTIFY_UNMAP while work still holds a stale vma pointer.\nPR:L - All vulnerable ioctls use DRM_AUTH (flag 0) and only DRM_ROOT_ONLY SET_STATE is excluded; exploitation needs local access to the render node, which unprivileged users typically have via the render group, not real root.\nUI:N - No victim interaction is required; the attacker opens the device, imports/maps buffers, and races munmap or command submission in their own process to hit the freed VMA.\nS:U - Impact is kernel heap corruption and privilege escalation within the host kernel via a local DRM client; it does not cross a VM, container, or IOMMU security boundary.\nC:H - Use-after-free of a freed vm_area_struct and vm_file in amdxdna_umap_release (and stale vma reads in aie2_populate_range) can expose adjacent kernel memory and be weaponized for arbitrary kernel read primitives.\nI:H - UAF on vma/vm_file during mapping_clear_unevictable enables corrupting kernel objects and control data, supporting heap grooming and arbitrary kernel write or code execution for local privilege escalation.\nA:H - Dereferencing a freed VMA in kernel context can cause oops/panic or wedged NPU workloads; UAF in this path is independently sufficient for complete local denial of service even if exploitation fails."
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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/accel/amdxdna/aie2_ctx.c",
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"drivers/accel/amdxdna/amdxdna_gem.c",
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"drivers/accel/amdxdna/amdxdna_gem.h"
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],
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"versions": [
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{
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"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f",
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"lessThan": "3dd12422653ad4bbbebe33c49c67dba4c653c804",
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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": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f",
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"lessThan": "bea20225c67fed9be3e98619c77af6ee3f43fe07",
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"status": "affected",
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},
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{
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"version": "e486147c912f653ef4b60a6c7dbd4168a4c56a9f",
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"lessThan": "1ba02717e821cf14ece642273958647e79698d3d",
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"status": "affected",
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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/accel/amdxdna/aie2_ctx.c",
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"drivers/accel/amdxdna/amdxdna_gem.c",
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"drivers/accel/amdxdna/amdxdna_gem.h"
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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": "6.18.57",
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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": "7.1.5",
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"lessThanOrEqual": "7.1.*",
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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": "7.2",
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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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"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": "6.18.57"
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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": "7.1.5"
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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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}
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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/3dd12422653ad4bbbebe33c49c67dba4c653c804"
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},
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{
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"url": "https://git.kernel.org/stable/c/bea20225c67fed9be3e98619c77af6ee3f43fe07"
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},
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{
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"url": "https://git.kernel.org/stable/c/1ba02717e821cf14ece642273958647e79698d3d"
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}
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],
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"title": "accel/amdxdna: Fix VMA access race",
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"x_generator": {
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