SB2026092526 - Type conversion in Linux kernel netfilter
Published: September 25, 2026
Security Bulletin ID
SB2026092526
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Type conversion (CVE-ID: CVE-2026-97417)
CWE-ID: CWE-704 - Type conversion
CVSSv4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to trigger an unaligned memory access.
The vulnerability exists due to an unsafe pointer cast in the tcp_sack() timestamp-only fast path when processing TCP options. A remote attacker can send a TCP packet containing unaligned options to trigger an unaligned memory access.
Remediation
Install update from vendor's website.