#VU125864 Integer overflow in Linux kernel - CVE-2026-31415
Published: April 14, 2026
Vulnerability identifier: #VU125864
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-31415
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an integer overflow in ip6_datagram_send_ctl() when processing repeated IPV6_DSTOPTS control messages. A local user can send specially crafted ancillary data to cause a denial of service.
Exploitation can trigger a kernel panic through skb_under_panic(), and unprivileged exploitation is possible in environments where unprivileged user namespaces are enabled and the attacker can obtain namespaced CAP_NET_RAW.
Remediation
Install security update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0bdaf54d3aaddfe8df29371260fa8d4939b4fd6f
- https://git.kernel.org/stable/c/4e453375561fc60820e6b9d8ebeb6b3ee177d42e
- https://git.kernel.org/stable/c/5e4ee5dbea134e9257f205e31a96040bed71e83f
- https://git.kernel.org/stable/c/63fda74885555e6bd1623b5d811feec998740ba4
- https://git.kernel.org/stable/c/872b74900d5daa37067ac676d9001bb929fc6a2a
- https://git.kernel.org/stable/c/9ed81d692758dfb9471d7799b24bfa7a08224c31