CVE-2026-99088
kernel: net: openvswitch: validate transport header presence in set_ipv6_addr
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 26, 2026
Updated · October 29, 2026
Description
A flaw was found in the Linux kernel's Open vSwitch component. When performing address rewriting actions on non-first IPv6 packet fragments, the system attempts to calculate checksums using an uninitialized transport header offset. An attacker sending specially crafted IPv6 network traffic could trigger this flaw, potentially causing kernel warnings or leading to a denial of service (DoS) if the system is configured to halt on warnings.
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 · 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-908 · Use of Uninitialized Resource