CVE-2026-31415
kernel: ipv6: avoid overflows in ip6_datagram_send_ctl()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 13, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel. A local attacker can exploit an integer overflow vulnerability in the ip6_datagram_send_ctl() function when processing multiple IPv6 Destination Options (DSTOPTS) control messages. This issue causes an incorrect calculation of header sizes, leading to a buffer underflow during packet construction. Successful exploitation can result in a kernel panic, causing a denial of service.
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-190 · Integer Overflow or Wraparound