SB20260815115 - Improper Check for Unusual or Exceptional Conditions in Linux kernel ext2

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Main Vulnerability Database SB20260815115

SB20260815115 - Improper Check for Unusual or Exceptional Conditions in Linux kernel ext2

Published: August 15, 2026

Security Bulletin ID SB20260815115
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2026-74362)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause incorrect success status reporting for failed synchronous writes.

The vulnerability exists due to improper check for unusual or exceptional conditions in ext2_dio_write_iter() in fs/ext2/file.c when handling direct I/O writes to O_SYNC/O_DSYNC files. A local user can trigger a failed sync during a write operation to cause incorrect success status reporting for failed synchronous writes.

The issue affects error propagation from generic_write_sync() and may also involve filemap_write_and_wait_range() handling.


Remediation

Install update from vendor's website.

References