CVE-2026-72392
kernel: ipv6: fib6: fix NULL deref in fib6_walk_continue() on multi-batch dump
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · August 15, 2026
Updated · August 20, 2026
Description
A flaw was found in the Linux kernel's IPv6 networking component. A vulnerability exists where a NULL pointer dereference can occur in the fib6_walk_continue() function during a multi-batch dump operation. This issue arises when a concurrent table insertion shifts existing entries, causing an incorrect pointer dereference. A local attacker could exploit this to trigger a kernel panic, leading to a Denial of Service (DoS) on the system.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference