SB20260928106 - Out-of-bounds read in Linux kernel net bonding driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2026-98089)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to read out-of-bounds memory.

The vulnerability exists due to an uninitialized transport header offset causing an out-of-bounds read in alb_determine_nd() in the bonding driver when inspecting ICMPv6 headers in IPv6 packets on bonding transmit paths. A remote attacker can send an IPv6 packet that is processed through a bonding transmit path to read out-of-bounds memory.

The affected paths include packets sent through AF_PACKET or raw sockets and forwarded packets.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2
• https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296
• https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9
• https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bf