Answer in brief
CVE-2026-68264 records a High severity (CVSS 7.8) vulnerability in drm/xe/pt: Reset current_op in xe_pt_update_ops_init(). 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 | >=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <be5c39730ab8f1dfe59983bf7d8e3705541d1fee || >=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <157b1e3384d7d37f59c0c2b2ff2af8f557db1daa || >=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <90e4fd331b980259c40118d05b89b0ec514e7c48 || >=e8babb280b5ef904df54b3a90e5a7e3a9600c4a9 <6384271ac1ac0099198d15df79212a19ebdb929d | be5c39730ab8f1dfe59983bf7d8e3705541d1fee, 157b1e3384d7d37f59c0c2b2ff2af8f557db1daa, 90e4fd331b980259c40118d05b89b0ec514e7c48, 6384271ac1ac0099198d15df79212a19ebdb929d |
| Linux/Linuxgeneric | 6.12 | Not reported |
Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
In the Linux kernel, the following vulnerability has been resolved: drm/xe/pt: Reset current_op in xe_pt_update_ops_init() xe_pt_update_ops_init() fails to reset current_op to 0. On the vm_bind path, ops_execute() calls xe_pt_update_ops_prepare() inside the xe_validation_guard() / drm_exec_until_all_locked() loop. When that loop retries due to lock contention or OOM eviction (drm_exec_retry_on_contention() / xe_validation_retry_on_oom()), xe_pt_update_ops_prepare() runs again on the same vops, and each call to bind_op_prepare() increments current_op without resetting it. After N retries current_op exceeds the array size allocated by xe_vma_ops_alloc(), causing an out-of-bounds write into SLUB-poisoned memory and a subsequent UAF crash in xe_migrate_update_pgtables_cpu() when reading the corrupted pt_op->bind. Also reset needs_svm_lock and needs_invalidation which are derived in the same prepare pass and would otherwise cause wrong migrate ops selection and redundant TLB invalidation on retry. Fix this by resetting current_op, needs_svm_lock and needs_invalidation in xe_pt_update_ops_init(). v2 (Matt): - Add details in commit message. - Add Fixes tag and Cc to [email protected] (cherry picked from commit 046045543e530605c441063535e7dca0075369a6)
Quoted source text, attributed separately from HOL analysis.