PT-2025-51722 · Linux+4 · Linux Kernel+4
Published
2025-12-16
·
Updated
2026-05-26
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CVE-2025-68310
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel versions prior to 5.14.0-570.12.1.bringup7.el9.s390x #1
Description
The Linux kernel contained a flaw where a deadlock could occur between PCI error recovery and mlx5 crdump operations on the s390 architecture. Specifically, the issue arose when attempting to acquire PCI configuration access locks during error recovery, potentially blocking other tasks. This could manifest as tasks being blocked for extended periods, as observed during error recovery testing with mlx5 core. The deadlock could be triggered by requesting a crdump while PCI error recovery was in progress, or by attempting to collect a crdump using the 'devlink health dump show pci/ reporter fw fatal' command during PCI error recovery. The fix involves acquiring only the device lock instead of the PCI device lock during s390 PCI error recovery, mirroring the approach used in powerpc's EEH and generic PCI AER processing.
Recommendations
Update to a version newer than 5.14.0-570.12.1.bringup7.el9.s390x #1.
Exploit
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Ubuntu
Mlx5 Core