175 lines
8.9 KiB
JSON
175 lines
8.9 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-2026-45980",
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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": "2026-05-13T15:03:33.090Z",
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"datePublished": "2026-05-27T12:18:39.136Z",
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"dateUpdated": "2026-08-05T12:29:00.693Z"
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},
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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": "2026-08-05T12:29:00.693Z"
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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: Stop job scheduling across aie2_release_resource()\n\nRunning jobs on a hardware context while it is in the process of\nreleasing resources can lead to use-after-free and crashes.\n\nFix this by stopping job scheduling before calling\naie2_release_resource() and restarting it after the release completes.\nAdditionally, aie2_sched_job_run() now checks whether the hardware\ncontext is still active."
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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 through ioctls (AMDXDNA_EXEC_CMD and AMDXDNA_DESTROY_HWCTX) on the local /dev/accel/accelN device file; there is no network exposure.\nAC:L - This is a race between the DRM scheduler running a queued job and the hwctx resource release, and the attacker controls both sides (submitting jobs and triggering destroy), so it can be reliably reproduced by looping create/submit/destroy cycles.\nPR:L - The relevant ioctls carry flag 0 with no capability or root check, and the NPU device is intended for unprivileged user-space ML applications, so any local user with device access can trigger it without elevated privileges.\nUI:N - The attacking process performs all steps (open, submit, destroy) itself; no victim action is required.\nS:U - The use-after-free corrupts kernel heap within the kernel's own security authority and does not cross into a separate VM/IOMMU boundary.\nC:H - The freed mailbox channel object can be reclaimed via heap spray, giving the attacker control over its contents and enabling kernel memory disclosure; per guidance UAF is High.\nI:H - The UAF on the channel object used for DMA/command submission enables heap-spray reallocation and controlled writes, providing an arbitrary-write/control-flow primitive.\nA:H - The race-induced use-after-free causes kernel oops/panic, as explicitly stated in the fix commit (\"use-after-free and crashes\")."
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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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],
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"versions": [
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{
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"version": "4fd6ca90fc7f509977585d39885f21b2911123f3",
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"lessThan": "b79d31dce49b50c79620389b3639280802a86960",
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"status": "affected",
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"status": "affected",
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},
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{
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"version": "6.14.9",
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"lessThan": "6.15",
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"status": "affected",
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"versionType": "semver"
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}
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{
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"programFiles": [
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"drivers/accel/amdxdna/aie2_ctx.c"
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"version": "0",
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"status": "unaffected",
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},
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{
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"version": "6.18.14",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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},
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{
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"version": "6.19.4",
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"lessThanOrEqual": "6.19.*",
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"status": "unaffected",
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},
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{
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"version": "7.0",
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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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"versionEndExcluding": "6.18.14"
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/b79d31dce49b50c79620389b3639280802a86960"
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},
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{
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"url": "https://git.kernel.org/stable/c/688c3ff079b10e4600f040944430d3d4ff448a15"
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},
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{
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"url": "https://git.kernel.org/stable/c/f1370241fe8045702bc9d0812b996791f0500f1b"
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}
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],
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"title": "accel/amdxdna: Stop job scheduling across aie2_release_resource()",
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