What’s Vulnerable › Vulnerabilities

CVE-2024-42091: drm/xe: Check pat.ops before dumping PAT settings

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-29 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Check pat.ops before dumping PAT settings We may leave pat.ops unset when running on brand new platform or when running as a VF. While the former is unlikely, the latter is valid (future) use case and will cause NPD when someone will try to dump PAT settings by debugfs. It's better to check pointer to pat.ops instead of specific .dump hook, as we have this hook always defined for every .ops variant.

Affected products

• Linux kernel: from 6.8 before 6.9.8 — fixed in 6.9.8

How to fix

Upgrade to a fixed version: Linux kernel 6.9.8. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/583ce246c7ff9edeb0de49130cdc3d45db8545cb
• https://git.kernel.org/stable/c/a918e771e6fbe1fa68932af5b0cdf473e23090cc
• https://git.kernel.org/stable/c/583ce246c7ff9edeb0de49130cdc3d45db8545cb
• https://git.kernel.org/stable/c/a918e771e6fbe1fa68932af5b0cdf473e23090cc

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