CVE-2025-38652 Affecting kernel-uek package, versions <0:5.4.17-2136.348.3.el8uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-ORACLE8-KERNELUEK-13540207
  • published13 Oct 2025
  • disclosed22 Aug 2025

Introduced: 22 Aug 2025

CVE-2025-38652  (opens in a new tab)

How to fix?

Upgrade Oracle:8 kernel-uek to version 0:5.4.17-2136.348.3.el8uek or higher.
This issue was patched in ELSA-2025-20663.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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

f2fs: fix to avoid out-of-boundary access in devs.path

  • touch /mnt/f2fs/012345678901234567890123456789012345678901234567890123
  • truncate -s $((102410241024))
    /mnt/f2fs/012345678901234567890123456789012345678901234567890123
  • touch /mnt/f2fs/file
  • truncate -s $((102410241024)) /mnt/f2fs/file
  • mkfs.f2fs /mnt/f2fs/012345678901234567890123456789012345678901234567890123
    -c /mnt/f2fs/file
  • mount /mnt/f2fs/012345678901234567890123456789012345678901234567890123
    /mnt/f2fs/loop

[16937.192225] F2FS-fs (loop0): Mount Device [ 0]: /mnt/f2fs/012345678901234567890123456789012345678901234567890123\xff\x01, 511, 0 - 3ffff [16937.192268] F2FS-fs (loop0): Failed to find devices

If device path length equals to MAX_PATH_LEN, sbi->devs.path[] may not end up w/ null character due to path array is fully filled, So accidently, fields locate after path[] may be treated as part of device path, result in parsing wrong device path.

struct f2fs_dev_info { ... char path[MAX_PATH_LEN]; ... };

Let's add one byte space for sbi->devs.path[] to store null character of device path string.

CVSS Base Scores

version 3.1