Riskcovery

CVE-2026-99208

drm/xe/oa: Zero OA buffer at allocation

State
Published
Severity
Not scored
Published
Oct 28, 2026
Updated
Oct 28, 2026
Reserved
Sep 25, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/oa: Zero OA buffer at allocation

ttm_bo_type_kernel BOs are not guaranteed to be zeroed on allocation and may contain data from previously freed pages. Since the OA buffer is mmap'able by userspace, this can expose stale kernel memory contents.

Streams opened with DRM_XE_OA_PROPERTY_OA_DISABLED allocate the OA buffer without calling xe_oa_init_oa_buffer(). Zero the buffer at allocation to prevent information disclosure through mmap.

The existing zeroing in xe_oa_init_oa_buffer() remains necessary for zero report-id/timestamp detection on enable/re-enable.

(cherry picked from commit 126c4c5388f9311a390b9b254a835b0cf0f55331)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 392bf22238ff88506f410c464ba0c7a84e9de471 to before 21f41b6daf0dbe2cdaaf9f54af6e23fd3c9190b9Affected
  • 392bf22238ff88506f410c464ba0c7a84e9de471 to before cd3e2918c247db631d88cdd704596d9d27e5513eAffected
  • 392bf22238ff88506f410c464ba0c7a84e9de471 to before fd8662823caa114a63f07222d2aa448f6ac5e864Affected
LinuxLinux
  • 6.11Affected
  • before 6.11Not affected
  • 6.18.59 through 6.18.*Not affected
  • 7.2.13 through 7.2.*Not affected
  • 7.3 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.