Deadlock Affecting kernel-debug-debuginfo package, versions <0:6.12.0-211.22.1.el10_2


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.38% (30th percentile)

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  • Snyk IDSNYK-CENTOS10-KERNELDEBUGDEBUGINFO-17311463
  • published12 Jun 2026
  • disclosed22 Apr 2026

Introduced: 22 Apr 2026

CVE-2026-31467  (opens in a new tab)
CWE-833  (opens in a new tab)

How to fix?

Upgrade Centos:10 kernel-debug-debuginfo to version 0:6.12.0-211.22.1.el10_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug-debuginfo package and not the kernel-debug-debuginfo package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

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

erofs: add GFP_NOIO in the bio completion if needed

The bio completion path in the process context (e.g. dm-verity) will directly call into decompression rather than trigger another workqueue context for minimal scheduling latencies, which can then call vm_map_ram() with GFP_KERNEL.

Due to insufficient memory, vm_map_ram() may generate memory swapping I/O, which can cause submit_bio_wait to deadlock in some scenarios.

Trimmed down the call stack, as follows:

f2fs_submit_read_io submit_bio //bio_list is initialized. mmc_blk_mq_recovery z_erofs_endio vm_map_ram __pte_alloc_kernel __alloc_pages_direct_reclaim shrink_folio_list __swap_writepage submit_bio_wait //bio_list is non-NULL, hang!!!

Use memalloc_noio_{save,restore}() to wrap up this path.

CVSS Base Scores

version 3.1