SB20260928172 - Race condition in Linux kernel trace

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-98032)

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:L/VI:N/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service or disclose uninitialized memory.

The vulnerability exists due to a race condition in the tracing ring buffer read-page handling when concurrently resizing trace ring-buffer subbuffers while reading trace_pipe_raw. A local user can concurrently resize trace ring-buffer subbuffers and read trace_pipe_raw to cause a denial of service or disclose uninitialized memory.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/75b37b8369778b69ce9738d1c97685a1615cb252
• https://git.kernel.org/stable/c/dae8dda341d2d9034a90d59e8a7d502e1263813f