SB20260918215 - Race condition in Linux kernel ext4

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-92500)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to a race condition in ext4 inline-data write handling when a concurrent page fault converts inline data to an extent between write preparation and completion. A local user can perform a buffered write that races with inline-data conversion to cause a denial of service or data loss.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/439aedfd7ae868d1d7b4930afe66091cb979cd5c
• https://git.kernel.org/stable/c/7edbb323bab2b2a609016014caafdb651c898249
• https://git.kernel.org/stable/c/bd8d74bd46d09905164255b8635fa58b45f41068