Race condition in Linux kernel - CVE-2026-98102
Published: September 28, 2026
Vulnerability identifier: #VU152364
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98102
CWE-ID: CWE-362
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause incorrect IPv6 multicast source filtering.
The vulnerability exists due to improper synchronization in ip6_mc_del1_src() when removing active IPv6 multicast source filters concurrently with RCU-protected list traversal. A local user can trigger concurrent source-filter removal and list traversal to cause incorrect IPv6 multicast source filtering.
Affected software
Linux kernel
How to mitigate CVE-2026-98102
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3