Riskcovery

CVE-2025-40023

drm/xe/vf: Don't expose sysfs attributes not applicable for VFs

State
Published
Severity
Not scored
Published
Oct 24, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/vf: Don't expose sysfs attributes not applicable for VFs

VFs can't read BMG_PCIE_CAP(0x138340) register nor access PCODE (already guarded by the info.skip_pcode flag) so we shouldn't expose attributes that require any of them to avoid errors like:

[] xe 0000:03:00.1: [drm] Tile0: GT0: VF is trying to read an \ inaccessible register 0x138340+0x0 [] RIP: 0010:xe_gt_sriov_vf_read32+0x6c2/0x9a0 [xe] [] Call Trace: [] xe_mmio_read32+0x110/0x280 [xe] [] auto_link_downgrade_capable_show+0x2e/0x70 [xe] [] dev_attr_show+0x1a/0x70 [] sysfs_kf_seq_show+0xaa/0x120 [] kernfs_seq_show+0x41/0x60

(cherry picked from commit a2d6223d224f333f705ed8495bf8bebfbc585c35)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff to before bacbadedbba737da8ae6e0464bc0971c30cda4cbAffected
  • 0e414bf7ad012e55c8a0aa4e91f68cb1cf5801ff to before 500dad428e5b0de4c1bdfa893822a6e06ddad0b5Affected
LinuxLinux
  • 6.16Affected
  • before 6.16Not affected
  • 6.16.10 through 6.16.*Not affected
  • 6.17 and laterNot affected

References

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