https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Tue, 29 Sep 2026 15:38:04 +0000 https://vulnerability.circl.lu/vuln/cve-2026-43036 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>net: use skb_header_pointer() for TCPv4 GSO frag_off check</p> <p>Syzbot reported a KMSAN uninit-value warning in gso_features_check() called from netif_skb_features() [1].</p> <p>gso_features_check() reads iph-&gt;frag_off to decide whether to clear mangleid_features. Accessing the IPv4 header via ip_hdr()/inner_ip_hdr() can rely on skb header offsets that are not always safe for direct dereference on packets injected from PF_PACKET paths.</p> <p>Use skb_header_pointer() for the TCPv4 frag_off check so the header read is robust whether data is already linear or needs copying.</p> <p>[1] https://syzkaller.appspot.com/bug?extid=1543a7d954d9c6d00407</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>net: use skb_header_pointer() for TCPv4 GSO frag_off check</p> <p>Syzbot reported a KMSAN uninit-value warning in gso_features_check() called from netif_skb_features() [1].</p> <p>gso_features_check() reads iph-&gt;frag_off to decide whether to clear mangleid_features. Accessing the IPv4 header via ip_hdr()/inner_ip_hdr() can rely on skb header offsets that are not always safe for direct dereference on packets injected from PF_PACKET paths.</p> <p>Use skb_header_pointer() for the TCPv4 frag_off check so the header read is robust whether data is already linear or needs copying.</p> <p>[1] https://syzkaller.appspot.com/bug?extid=1543a7d954d9c6d00407</p> https://vulnerability.circl.lu/vuln/cve-2026-43036