Out-of-bounds read in Linux kernel - CVE-2026-98089
Published: September 28, 2026
Vulnerability identifier: #VU152369
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: CVE-2026-98089
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-98089
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3