drm/amdkfd: fix 32-bit overflow in CWSR total size calculation
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix 32-bit overflow in CWSR total size calculation total_cwsr_size was computed in 32-bit before being used as a BO/SVM allocation size. With large ctx_save_restore_area_size and debug_memory_size multiplied by the XCC count, the product can wrap, yielding an undersized CWSR save area that firmware later overruns. Promote total_cwsr_size to u64 and use check_add_overflow()/ check_mul_overflow() in both kfd_queue_acquire_buffers() and kfd_queue_release_buffers(). (cherry picked from commit 319f7e13423ae3f486b9aea82f9ad2d6af0ee608)
CVE-2026-68257
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-2026-68257
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": "325aa07165394b8e866ffe9ec1d4c99d9195b2f2",
"lessThan": "b88ffe6593607364a8c06a48c6f29e55437cdf8e",
"versionType": "git"
},
{
"status": "affected",
"version": "d15deafab5d722afb9e2f83c5edcdef9d9d98bd1",
"lessThan": "abce3276c57e36c955627307469b9f009057a467",
"versionType": "git"
},
{
"status": "affected",
"version": "d15deafab5d722afb9e2f83c5edcdef9d9d98bd1",
"lessThan": "865532d54eb57b660b1cb1b0e1755776ce21b849",
"versionType": "git"
},
{
"status": "affected",
"version": "d15deafab5d722afb9e2f83c5edcdef9d9d98bd1",
"lessThan": "2b0386d4293920e690c0e017708f999b93cc729b",
"versionType": "git"
},
{
"status": "affected",
"version": "63600103d2ac5c09fdeec5b931b396e4e0efd5d8",
"versionType": "git"
},
{
"status": "affected",
"version": "6.12.59",
"lessThan": "6.12.101",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.17.9",
"lessThan": "6.18",
"versionType": "semver"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_queue.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.101",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.42",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.6",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/gpu/drm/amd/amdkfd/kfd_queue.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-68257
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #41164 · Revision 1
- Added to Heist Feed
- Publisher date