Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-28T00:00:00 kernel: ipv6: xfrm6: release dst on error in xfrm6_rcv_encap() 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-772

A flaw was found in the Linux kernel's IPv6 (Internet Protocol version 6) xfrm6 component. When processing encapsulated IPv6 packets, the `xfrm6_rcv_encap()` function fails to release a destination (dst) entry reference if an IPv6 route lookup results in an error. A remote attacker could exploit this by sending repeated malformed IPv6 packets, leading to a continuous leak of dst entries and eventually causing a Denial of Service (DoS) due to resource exhaustion.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Affected kernel Red Hat Enterprise Linux 8 Affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-46172 https://nvd.nist.gov/vuln/detail/CVE-2026-46172 https://lore.kernel.org/linux-cve-announce/2026052827-CVE-2026-46172-92e0@gregkh/T