Bug 2513414 (CVE-2026-68267)

Summary: CVE-2026-68267 kernel: drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the `drm/xe/rtp` component of the Linux kernel. This vulnerability arises from the unconditional whitelisting of Output/Availability (OA) registers, which is a security violation. By default, these registers could be whitelisted after system events such as probe, graphics translation (gt) reset, resume, and engine reset. This improper whitelisting could allow a local attacker to gain unauthorized access to privileged OA registers, potentially leading to a security bypass or information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-10 12:36:00 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/xe/rtp: Add RING_FORCE_TO_NONPRIV_DENY to OA whitelists

Unconditionally whitelisting OA registers is a security violation. Set
RING_FORCE_TO_NONPRIV_DENY bit in OA nonpriv slots, so that OA registers
don't get whitelisted by default after probe, gt reset, resume and engine
reset.

(cherry picked from commit 90511bdcfda97211c01f1d945d4ea616578d8fca)
Comment 1 Mauro Matteo Cascella 2026-08-11 16:39:03 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081023-CVE-2026-68267-fbd4@gregkh/T