Use After Free Affecting kernel-debuginfo-common-aarch64 package, versions <0:6.12.0-124.38.1.el10_1


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-ROCKY10-KERNELDEBUGINFOCOMMONAARCH64-15341178
  • published25 Feb 2026
  • disclosed3 Jul 2025

Introduced: 3 Jul 2025

CVE-2025-38172  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 kernel-debuginfo-common-aarch64 to version 0:6.12.0-124.38.1.el10_1 or higher.
This issue was patched in RLSA-2026:2721.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo-common-aarch64 package and not the kernel-debuginfo-common-aarch64 package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

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

erofs: avoid using multiple devices with different type

For multiple devices, both primary and extra devices should be the same type. erofs_init_device has already guaranteed that if the primary is a file-backed device, extra devices should also be regular files.

However, if the primary is a block device while the extra device is a file-backed device, erofs_init_device will get an ENOTBLK, which is not treated as an error in erofs_fc_get_tree, and that leads to an UAF:

erofs_fc_get_tree get_tree_bdev_flags(erofs_fc_fill_super) erofs_read_superblock erofs_init_device // sbi->dif0 is not inited yet, // return -ENOTBLK deactivate_locked_super free(sbi) if (err is -ENOTBLK) sbi->dif0.file = filp_open() // sbi UAF

So if -ENOTBLK is hitted in erofs_init_device, it means the primary device must be a block device, and the extra device is not a block device. The error can be converted to -EINVAL.

CVSS Base Scores

version 3.1