SB2026062931 - Improper Check or Handling of Exceptional Conditions in Linux kernel nilfs2

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-53319)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of expected error conditions in wbt_init_enable_default() when processing ioctl(BLKPG) requests during MTD partition creation. A local user can trigger memory allocation failures to cause a denial of service.

The issue results in a spurious kernel warning and stack trace rather than memory corruption.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/e9b004ff83067cdf96774b45aea4b239ace99a2f
• https://git.kernel.org/stable/c/fd7a982657077469802594a5165bc30b9a55af70