This Red Hat security advisory (RHSA-2026:14230) covers multiple kernel vulnerabilities affecting Red Hat Enterprise Linux 8.6 variants. CVE-2026-23191 addresses a race condition in the ALSA aloop PCM trigger code. CVE-2026-23401 involves privilege escalation or denial of service risks in the Linux kernel's KVM due to improper handling of shadow page table entries. CVE-2026-31431 relates to the crypto subsystem's algif_aead component, reverting to out-of-place operation to fix a regression. The advisory provides updated kernel packages that fix these issues. Systems must be rebooted after applying the update for the fixes to take effect. The advisory does not provide CVSS scores but rates the impact as important. No known exploits in the wild have been reported at the time of publication.

The vulnerabilities could allow local attackers to cause race conditions, privilege escalation, or denial of service on affected systems running vulnerable kernel versions of Red Hat Enterprise Linux 8.6. The crypto regression fix addresses potential cryptographic operation issues. These impacts affect the core Linux kernel, which is critical for system security and stability.

Red Hat has released updated kernel packages for Red Hat Enterprise Linux 8.6 variants that address these vulnerabilities. Users should apply the provided kernel updates as detailed in the Red Hat advisory and reboot affected systems to ensure the fixes take effect. No additional mitigation steps are indicated beyond applying the official update and rebooting.