SB20260928171 - Access of Uninitialized Pointer in Linux kernel ipv4

Description

This security bulletin contains information about 1 vulnerability.

1) Access of Uninitialized Pointer (CVE-ID: CVE-2026-98031)

CWE-ID: CWE-824 - Access of Uninitialized Pointer

CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to access of an uninitialized pointer in remove_nh_grp_entry() when replacing a reduced nexthop group after a listener allocation failure. A local user can trigger removal of a nexthop group entry to cause a denial of service.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/030c878eaedf0449e2b5401a0a0146d0afcc645e
• https://git.kernel.org/stable/c/5bd9e4e7cdaa03879e9b73b12ab52cceb1edd55b
• https://git.kernel.org/stable/c/d643cea4248668dc493c513aa7cbc6505eb1a4a9
• https://git.kernel.org/stable/c/d80677ad7aa5bebfccfd58caa4852b65abe70561