CVE-2026-43280
kernel: drm/xe: Add bounds check on pat_index to prevent OOB kernel read in madvise
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 6, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's drm/xe module. A local user can exploit this vulnerability by providing a malformed pat_index value through the madvise IOCTL. This allows the xe_pat_index_get_coh_mode() function to perform an out-of-bounds read from the xe->pat.table array, leading to information disclosure from kernel memory.
Statement
Red Hat acknowledges the upstream Linux kernel correction for «drm/xe» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-1285 · Improper Validation of Specified Index, Position, or Offset in Input