CVE-2025-40340
- Source
- https://cve.org/CVERecord?id=CVE-2025-40340
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40340.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2025-40340
- Downstream
- Related
- Published
- 2025-12-09T04:09:57.059Z
- Modified
- 2026-03-12T03:54:40.446112Z
- Summary
- drm/xe: Fix oops in xe_gem_fault when running core_hotunplug test.
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
drm/xe: Fix oops in xegemfault when running core_hotunplug test.
I saw an oops in xegemfault when running the xe-fast-feedback testlist against the realtime kernel without debug options enabled.
The panic happens after corehotunplug unbind-rebind finishes. Presumably what happens is that a process mmaps, unlocks because of the FAULTFLAGRETRYNOWAIT logic, has no process memory left, causing ttmbovmdummypage() to return VMFAULTNOPAGE, since there was nothing left to populate, and then oopses in "memtypeisvram(tbo->resource->memtype)" because tbo->resource is NULL.
It's convoluted, but fits the data and explains the oops after the test exits.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40340.json" }- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/1cda3c755bb7770be07d75949bb0f45fb88651f6
- https://git.kernel.org/stable/c/29a3064f9c5a908aaf0b39cd6ed30374db11840d
- https://git.kernel.org/stable/c/99428bd6123d5676209dfb1d7a8f176cc830b665
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40340.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-40340