SB2026102410 - Incorrect comparison in Linux kernel seq oss
Published: October 24, 2026
Security Bulletin ID
SB2026102410
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Incorrect comparison (CVE-ID: CVE-2026-98912)
CWE-ID: CWE-697 - Incorrect Comparison
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause data to be written beyond the requested userspace buffer length.
The vulnerability exists due to an inverted buffer-length comparison in snd_seq_oss_read() when processing reads of queued OSS sequencer events. A local user can request a read shorter than the next queued event to cause the event to be copied beyond the requested userspace buffer length.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/20b8520d1ef996173065f7abdde47b99136c0785
- https://git.kernel.org/stable/c/2922cf2583e590f51bed613a6fcd27b9aea83674
- https://git.kernel.org/stable/c/372bec8a01e2ab8eaa6851bdc346ede5f82dba99
- https://git.kernel.org/stable/c/591226398c1f93bd994678237ff0be229b19d3bb
- https://git.kernel.org/stable/c/611f538253d970f4d152003841544e875828d015
- https://git.kernel.org/stable/c/7483fd5f6990f43cc266e94b3f50ce84856ebb97
- https://git.kernel.org/stable/c/b3b4b647313757a275be7f7f9d0415d0a90acf73