138 lines
7.1 KiB
JSON
138 lines
7.1 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-2026-31490",
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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": "2026-03-09T15:48:24.102Z",
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"datePublished": "2026-04-22T13:54:14.241Z",
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"dateUpdated": "2026-08-05T12:23:02.564Z"
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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": "2026-08-05T12:23:02.564Z"
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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/pf: Fix use-after-free in migration restore\n\nWhen an error is returned from xe_sriov_pf_migration_restore_produce(),\nthe data pointer is not set to NULL, which can trigger use-after-free\nin subsequent .write() calls.\nSet the pointer to NULL upon error to fix the problem.\n\n(cherry picked from commit 4f53d8c6d23527d734fe3531d08e15cb170a0819)"
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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 vulnerable restore write path is reached through local kernel interfaces, primarily the Xe VFIO migration resume data fd and also PF debugfs migration_data, not by network packets.\nAC:L - An attacker with access to the migration write interface can deliberately write a malformed complete packet, get an error from restore production, and then issue a subsequent write against the stale pending pointer.\nPR:L - The debugfs path is root-only, but the same helper is exposed through xe-vfio-pci migration to a process with an assigned VFIO device fd, which is commonly delegated to an unprivileged VMM user.\nUI:N - No victim action is needed once the attacker can operate the local VFIO/debugfs migration interface; the attacker directly performs the state transition and writes restore data.\nS:U - The bug corrupts host kernel memory from a host kernel driver path, so the impact remains within the same kernel security authority.\nC:H - This is a kernel use-after-free on a packet object containing attacker-influenced header and buffer pointer state, which can plausibly be shaped into disclosure of kernel memory.\nI:H - The stale packet pointer is reused on later writes, including copy_from_user through fields from freed/reallocated memory, making arbitrary kernel memory corruption defensible.\nA:H - At minimum the dangling pointer can be triggered repeatedly to cause kernel oops, panic, or device/host instability."
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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_sriov_packet.c"
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],
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"versions": [
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{
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"version": "1ed30397c0b92b97381dbd11362fdbbf93e046d2",
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"lessThan": "e28552b4ddea5cb4725380dd08237831af835124",
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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": "1ed30397c0b92b97381dbd11362fdbbf93e046d2",
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"lessThan": "87997b6c6516e049cbaf2fc6810b213d587a06b1",
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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_sriov_packet.c"
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],
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"versions": [
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{
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"version": "6.19",
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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": "6.19",
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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": "6.19.11",
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"lessThanOrEqual": "6.19.*",
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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": "7.0",
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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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],
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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": "6.19",
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"versionEndExcluding": "6.19.11"
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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": "6.19",
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"versionEndExcluding": "7.0"
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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/e28552b4ddea5cb4725380dd08237831af835124"
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},
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{
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"url": "https://git.kernel.org/stable/c/87997b6c6516e049cbaf2fc6810b213d587a06b1"
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}
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],
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"title": "drm/xe/pf: Fix use-after-free in migration restore",
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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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}
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} |