CVE-2026-74469

CVE CVE-2026-74469EUVD EUVD-2026-59662Published 2026-08-15T12:27:06.000ZLast changed 2026-08-19T16:37:15.000ZCVSS 8.8

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: sctp: prevent peer transport count overflow sctp_assoc_add_peer() increments the association's 16-bit transport_count for every new unique peer. Adding the 65,536th transport wraps the count to zero. SCTP sock_diag uses transport_count to reserve the INET_DIAG_PEERS payload, then copies one sockaddr_storage for every entry in transport_addr_list. After the wrap, a diagnostic dump reserves an empty payload and writes 8 MiB of peer addresses past the skb tail. Reject a new unique peer when transport_count has reached U16_MAX. Perform the check after the existing-peer lookup so a duplicate address continues to return its existing transport at the limit.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.1.183; patch: 7.2; patch: 0; 8f840e47f190cbe61a96945c13e9551048d42cef <bd0e9289e2642f6a5c54faad304ce0f41e926d22; patch: 7.1.8; 4.7; 8f840e47f190cbe61a96945c13e9551048d42cef <09e722030e8148ba4ed1e42c6b2ea57bda9f9895; 8f840e47f190cbe61a96945c13e9551048d42cef <b453e00da1211e997b82743d28af7714c59c05c8; patch: 6.12.103; 8f840e47f190cbe61a96945c13e9551048d42cef <4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0; patch: 6.18.44; 8f840e47f190cbe61a96945c13e9551048d42cef <6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75; 8f840e47f190cbe61a96945c13e9551048d42cef <dfea32dd76f390e3155177b0038cc47b01386198; patch: 5.10.265; patch: 6.6.151; 8f840e47f190cbe61a96945c13e9551048d42cef <546221b86ceeba0d8fec92d46a0604bb7b62be07; 8f840e47f190cbe61a96945c13e9551048d42cef <80f48523a0fe42db2e7375dff4e38a25c117090a; patch: 5.15.216

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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