https://vulnerability.circl.lu Contains only the most 10 recent entries. http://www.rssboard.org/rss-specification python-feedgen en Thu, 01 Oct 2026 03:15:49 +0000 https://vulnerability.circl.lu/vuln/cve-2026-31659 <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>batman-adv: reject oversized global TT response buffers</p> <p>batadv_tt_prepare_tvlv_global_data() builds the allocation length for a global TT response in 16-bit temporaries. When a remote originator advertises a large enough global TT, the TT payload length plus the VLAN header offset can exceed 65535 and wrap before kmalloc().</p> <p>The full-table response path still uses the original TT payload length when it fills tt_change, so the wrapped allocation is too small and batadv_tt_prepare_tvlv_global_data() writes past the end of the heap object before the later packet-size check runs.</p> <p>Fix this by rejecting TT responses whose TVLV value length cannot fit in the 16-bit TVLV payload length field.</p> <p><strong>Affected:</strong> Linux</p> <p>In the Linux kernel, the following vulnerability has been resolved:</p> <p>batman-adv: reject oversized global TT response buffers</p> <p>batadv_tt_prepare_tvlv_global_data() builds the allocation length for a global TT response in 16-bit temporaries. When a remote originator advertises a large enough global TT, the TT payload length plus the VLAN header offset can exceed 65535 and wrap before kmalloc().</p> <p>The full-table response path still uses the original TT payload length when it fills tt_change, so the wrapped allocation is too small and batadv_tt_prepare_tvlv_global_data() writes past the end of the heap object before the later packet-size check runs.</p> <p>Fix this by rejecting TT responses whose TVLV value length cannot fit in the 16-bit TVLV payload length field.</p> https://vulnerability.circl.lu/vuln/cve-2026-31659