PulseLinuxLINUX UPDATE INTELLIGENCE
CVE Database›Document archive›CVE-2026-46309

CVE-2026-46309

kernel: drm/xe/uapi: Reject coh_none PAT index for CPU cached memory in madvise

Loading…

Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · June 8, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's drm/xe/uapi component. This vulnerability allows a Graphics Processing Unit (GPU) using coh_none coherency mode to bypass CPU caches and read stale sensitive data directly from Dynamic Random-Access Memory (DRAM). This can lead to information disclosure, where data from previously freed pages of other processes may be leaked.

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 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-524 · Use of Cache Containing Sensitive Information