What’s Vulnerable › Vulnerabilities

CVE-2024-37026: drm/xe: Only use reserved BCS instances for usm migrate exec queue

• 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: 2024-06-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Only use reserved BCS instances for usm migrate exec queue The GuC context scheduling queue is 2 entires deep, thus it is possible for a migration job to be stuck behind a fault if migration exec queue shares engines with user jobs. This can deadlock as the migrate exec queue is required to service page faults. Avoid deadlock by only using reserved BCS instances for usm migrate exec queue. (cherry picked from commit 04f4a70a183a688a60fe3882d6e4236ea02cfc67)

Affected products

• Linux kernel: from 6.8 before 6.9.4; 6.10-rc1 — fixed in 6.9.4

How to fix

Upgrade to a fixed version: Linux kernel 6.9.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/92deed4a9bfd9ef187764225bba530116c49e15c
• https://git.kernel.org/stable/c/c8ea2c31f5ea437199b239d76ad5db27343edb0c
• https://git.kernel.org/stable/c/92deed4a9bfd9ef187764225bba530116c49e15c
• https://git.kernel.org/stable/c/c8ea2c31f5ea437199b239d76ad5db27343edb0c

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