CVE-2025-40166 (GCVE-0-2025-40166)
Vulnerability from cvelistv5 – Published: 2025-11-12 10:26 – Updated: 2025-12-01 06:19
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved:
drm/xe/guc: Check GuC running state before deregistering exec queue
In normal operation, a registered exec queue is disabled and
deregistered through the GuC, and freed only after the GuC confirms
completion. However, if the driver is forced to unbind while the exec
queue is still running, the user may call exec_destroy() after the GuC
has already been stopped and CT communication disabled.
In this case, the driver cannot receive a response from the GuC,
preventing proper cleanup of exec queue resources. Fix this by directly
releasing the resources when GuC is not running.
Here is the failure dmesg log:
"
[ 468.089581] ---[ end trace 0000000000000000 ]---
[ 468.089608] pci 0000:03:00.0: [drm] *ERROR* GT0: GUC ID manager unclean (1/65535)
[ 468.090558] pci 0000:03:00.0: [drm] GT0: total 65535
[ 468.090562] pci 0000:03:00.0: [drm] GT0: used 1
[ 468.090564] pci 0000:03:00.0: [drm] GT0: range 1..1 (1)
[ 468.092716] ------------[ cut here ]------------
[ 468.092719] WARNING: CPU: 14 PID: 4775 at drivers/gpu/drm/xe/xe_ttm_vram_mgr.c:298 ttm_vram_mgr_fini+0xf8/0x130 [xe]
"
v2: use xe_uc_fw_is_running() instead of xe_guc_ct_enabled().
As CT may go down and come back during VF migration.
(cherry picked from commit 9b42321a02c50a12b2beb6ae9469606257fbecea)
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
dd08ebf6c3525a7ea2186e636df064ea47281987 , < 2c6e5904c5bdbac8e0eadee40f70c42bb83f6dc6
(git)
Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < fa708415566bbe5361c935645107319f8edc8dc1 (git) Affected: dd08ebf6c3525a7ea2186e636df064ea47281987 , < 9f64b3cd051b825de0a2a9f145c8e003200cedd5 (git) |
||
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_guc_submit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "2c6e5904c5bdbac8e0eadee40f70c42bb83f6dc6",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "fa708415566bbe5361c935645107319f8edc8dc1",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
},
{
"lessThan": "9f64b3cd051b825de0a2a9f145c8e003200cedd5",
"status": "affected",
"version": "dd08ebf6c3525a7ea2186e636df064ea47281987",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"drivers/gpu/drm/xe/xe_guc_submit.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "6.8"
},
{
"lessThan": "6.8",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.55",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.17.*",
"status": "unaffected",
"version": "6.17.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.55",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.17.5",
"versionStartIncluding": "6.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.18",
"versionStartIncluding": "6.8",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe/guc: Check GuC running state before deregistering exec queue\n\nIn normal operation, a registered exec queue is disabled and\nderegistered through the GuC, and freed only after the GuC confirms\ncompletion. However, if the driver is forced to unbind while the exec\nqueue is still running, the user may call exec_destroy() after the GuC\nhas already been stopped and CT communication disabled.\n\nIn this case, the driver cannot receive a response from the GuC,\npreventing proper cleanup of exec queue resources. Fix this by directly\nreleasing the resources when GuC is not running.\n\nHere is the failure dmesg log:\n\"\n[ 468.089581] ---[ end trace 0000000000000000 ]---\n[ 468.089608] pci 0000:03:00.0: [drm] *ERROR* GT0: GUC ID manager unclean (1/65535)\n[ 468.090558] pci 0000:03:00.0: [drm] GT0: total 65535\n[ 468.090562] pci 0000:03:00.0: [drm] GT0: used 1\n[ 468.090564] pci 0000:03:00.0: [drm] GT0: range 1..1 (1)\n[ 468.092716] ------------[ cut here ]------------\n[ 468.092719] WARNING: CPU: 14 PID: 4775 at drivers/gpu/drm/xe/xe_ttm_vram_mgr.c:298 ttm_vram_mgr_fini+0xf8/0x130 [xe]\n\"\n\nv2: use xe_uc_fw_is_running() instead of xe_guc_ct_enabled().\n As CT may go down and come back during VF migration.\n\n(cherry picked from commit 9b42321a02c50a12b2beb6ae9469606257fbecea)"
}
],
"providerMetadata": {
"dateUpdated": "2025-12-01T06:19:19.669Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/2c6e5904c5bdbac8e0eadee40f70c42bb83f6dc6"
},
{
"url": "https://git.kernel.org/stable/c/fa708415566bbe5361c935645107319f8edc8dc1"
},
{
"url": "https://git.kernel.org/stable/c/9f64b3cd051b825de0a2a9f145c8e003200cedd5"
}
],
"title": "drm/xe/guc: Check GuC running state before deregistering exec queue",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-40166",
"datePublished": "2025-11-12T10:26:24.143Z",
"dateReserved": "2025-04-16T07:20:57.176Z",
"dateUpdated": "2025-12-01T06:19:19.669Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2025-40166\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-11-12T11:15:46.880\",\"lastModified\":\"2025-11-12T16:19:12.850\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/xe/guc: Check GuC running state before deregistering exec queue\\n\\nIn normal operation, a registered exec queue is disabled and\\nderegistered through the GuC, and freed only after the GuC confirms\\ncompletion. However, if the driver is forced to unbind while the exec\\nqueue is still running, the user may call exec_destroy() after the GuC\\nhas already been stopped and CT communication disabled.\\n\\nIn this case, the driver cannot receive a response from the GuC,\\npreventing proper cleanup of exec queue resources. Fix this by directly\\nreleasing the resources when GuC is not running.\\n\\nHere is the failure dmesg log:\\n\\\"\\n[ 468.089581] ---[ end trace 0000000000000000 ]---\\n[ 468.089608] pci 0000:03:00.0: [drm] *ERROR* GT0: GUC ID manager unclean (1/65535)\\n[ 468.090558] pci 0000:03:00.0: [drm] GT0: total 65535\\n[ 468.090562] pci 0000:03:00.0: [drm] GT0: used 1\\n[ 468.090564] pci 0000:03:00.0: [drm] GT0: range 1..1 (1)\\n[ 468.092716] ------------[ cut here ]------------\\n[ 468.092719] WARNING: CPU: 14 PID: 4775 at drivers/gpu/drm/xe/xe_ttm_vram_mgr.c:298 ttm_vram_mgr_fini+0xf8/0x130 [xe]\\n\\\"\\n\\nv2: use xe_uc_fw_is_running() instead of xe_guc_ct_enabled().\\n As CT may go down and come back during VF migration.\\n\\n(cherry picked from commit 9b42321a02c50a12b2beb6ae9469606257fbecea)\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2c6e5904c5bdbac8e0eadee40f70c42bb83f6dc6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9f64b3cd051b825de0a2a9f145c8e003200cedd5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/fa708415566bbe5361c935645107319f8edc8dc1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…