drm/amdkfd: guard against NULL restore_mqd in CRIU queue restore
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: guard against NULL restore_mqd in CRIU queue restore Both create_queue_cpsch() and create_queue_nocpsch() unconditionally call mqd_mgr->restore_mqd() when a CRIU restore is in progress (qd != NULL), with no NULL guard. On any system where restore_mqd is not implemented for the given queue type, a user holding CAP_CHECKPOINT_RESTORE can trigger a kernel NULL pointer dereference and panic the machine by issuing KFD_IOC_CRIU_OP_RESTORE with a crafted queue restore object. Note that checkpoint_mqd is likewise unimplemented on GFX12, so no legitimate CRIU image can reach this path — only a hand-crafted restore payload. Add a NULL guard for restore_mqd immediately after mqd_mgr is resolved, unwinding via the existing error labels and returning -EOPNOTSUPP if the callback is not implemented. This mirrors the existing checkpoint_mqd guard in checkpoint_mqd().
CVE-2026-89807
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89807
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "48f0bdf4e38e42b8285622cfcfc7e6e490b1a719",
"lessThan": "19c73848493ab58e39649700da6de11710a36de1",
"versionType": "git"
},
{
"status": "affected",
"version": "48f0bdf4e38e42b8285622cfcfc7e6e490b1a719",
"lessThan": "ebffa44e7a21ead59ac4b4264e8fc2cbb44c4a21",
"versionType": "git"
},
{
"status": "affected",
"version": "48f0bdf4e38e42b8285622cfcfc7e6e490b1a719",
"lessThan": "c643c229babe2e8efc5eefe60e19d44868a643ff",
"versionType": "git"
},
{
"status": "affected",
"version": "48f0bdf4e38e42b8285622cfcfc7e6e490b1a719",
"lessThan": "6aa530642f95d5c48aa336416f94a35e7949b647",
"versionType": "git"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.11"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.11",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.110",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.51",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.5",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89807
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #36271 · Revision 1
- Added to Heist Feed
- Publisher date