Rocky Linux 9 [CIQ] Security Update: kernel / kernel-64k / kernel-64k-core / kernel-64k-debug / etc Multiple Vulnerabilities (crlsa-2025_10379)

The Rocky Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-202510379 advisory. kernel: ipv6: mcast: extend RCU protection in igmp6send CVE-2025-21759 kernel: ovl: fix UAF in ovldentryupdatereval by moving dput in ovllinkup...

ROS-20260120-7316

A vulnerability in the ovldentryupdatereval function of the fs/overlayfs/copyup.c module of the Linux kernel file system is related to the use of memory after it has been freed. Exploitation of the vulnerability could allow an attacker to cause a denial of service...

CVE-2025-21887: Use After Free

In the Linux kernel, the following vulnerability has been resolved: ovl: fix UAF in ovldentryupdatereval by moving dput in ovllinkup The issue was caused by dputupper being called before ovldentryupdatereval, while upper-dflags was still accessed in ovldentryremote. Move dputupper after its last...