Answer in brief
CVE-2026-98510 records a High severity (CVSS 7.8) vulnerability in drm/xe/vm: nuke PTs only after unlinking contested VMAs. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=b06d47be7c83165d3b3e45e1d5f9520b79c7f5cc <70fddc065ac80845ffd33095b3635d59883cf7e6 || >=b06d47be7c83165d3b3e45e1d5f9520b79c7f5cc <ba678c2b02e0d36b53deb5a6d5e5ea044d36def7 || >=b06d47be7c83165d3b3e45e1d5f9520b79c7f5cc <bddaa5e4094c134452c29e20a26c4718827e4cb1 || >=b06d47be7c83165d3b3e45e1d5f9520b79c7f5cc <24a22fb3c731474b68e986af6804db450fb88617 | 70fddc065ac80845ffd33095b3635d59883cf7e6, ba678c2b02e0d36b53deb5a6d5e5ea044d36def7, bddaa5e4094c134452c29e20a26c4718827e4cb1, 24a22fb3c731474b68e986af6804db450fb88617 |
| Linux/Linuxgeneric | 6.8 | Not reported |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/xe/vm: nuke PTs only after unlinking contested VMAs In xe_vm_close_and_put(), external-BO VMAs are queued on the contested list for deferred destruction via xe_vma_destroy_unlocked(). However, xe_vm_pt_destroy() was previously invoked before processing contested VMAs, destroying vm->pt_root while those VMAs were still linked to their respective buffer objects (vm_bo->list.gpuva). If a concurrent thread evicts one of those shared buffer objects, xe_bo_trigger_rebind() holding only bo->resv walks the BO's VMAs and, in fault mode, calls xe_vm_invalidate_vma() -> xe_pt_zap_ptes(). Because vm->pt_root[tile->id] is already NULL, dereferencing pt->level causes a NULL ptr deref. Fix this by deferring xe_vm_free_scratch() and xe_vm_pt_destroy() until after all contested VMAs have been unlinked and destroyed. User is reporting hitting a NULL ptr deref in xe_pt_zap_ptes(), which could be explained by this race. (cherry picked from commit c2863648959489767f08892fd6e90577d2ea0b6a)
Quoted source text, attributed separately from HOL analysis.