CVE-2026-74563

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A slab-use-after-free issue exists in the Linux kernel. The function rds tcp laddr check() retrieves a scoped IPv6 interface using dev get by index rcu() but releases the RCU read-side lock before passing the net device pointer to ipv6 chk addr(). Because the device is only guaranteed to remain active within the RCU read-side section, a concurrent RTM DELLINK operation can free the net device. This leads to a use-after-free condition when ipv6 chk addr and flags() dereferences the stale pointer, resulting in the reading of freed memory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.