CVE-2026-98089

In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix uninitialized transport header access in alb_determine_nd() alb_determine_nd() uses icmp6_hdr(skb) to inspect ICMPv6 headers. However, in xmit paths (e.g. packets sent via AF_PACKET / raw sockets or forwarded packets), skb->transport_header is not guaranteed to be initialized. While pskb_network_may_pull() ensures the packet data is linear starting from the network header, it does not set or adjust the transport header offset. Dereferencing icmp6_hdr(skb) can therefore access out-of-bounds memory. Fetch the icmp6hdr directly after ipv6hdr following pskb_network_may_pull(), and reload ipv6hdr in case pskb_may_pull() reallocated skb->head. Also remove the unused bond argument from alb_determine_nd().

• CWE-908

• https://git.kernel.org/stable/c/27314f96d29b54e815e7a9b84c3273f1895e68e2Patch
• https://git.kernel.org/stable/c/3b178894931a268c09126a5b53630f343e10e296Patch
• https://git.kernel.org/stable/c/70f3995830d3f1e79faa14eb0605914f778feca9Patch
• https://git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99Patch
• https://git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5Patch
• https://git.kernel.org/stable/c/e39cf90bd856443542b97933289749fca07476bfPatch

Published

Sep 25, 2026

Last Modified

Nov 12, 2026

Status

Analyzed

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