In the Linux kernel, the following vulnerability has been resolved: bonding: alb: fix...
🔗 CVE IDs covered (1)
📋 Description
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().
🔗 References (8)
- https://nvd.nist.gov/vuln/detail/CVE-2026-98089
- 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
- https://git.kernel.org/stable/c/7adb1bf25b0c5cedfb49b6e82844394d4f3c0d99
- https://git.kernel.org/stable/c/862c8eb6947689c44fe11353755576a3672563a5
- https://github.com/advisories/GHSA-3x47-v429-xjvw