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.

https://git.kernel.org/stable/c/09e722030e8148ba4ed1e42c6b2ea57bda9f9895

https://git.kernel.org/stable/c/4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0

https://git.kernel.org/stable/c/546221b86ceeba0d8fec92d46a0604bb7b62be07

https://git.kernel.org/stable/c/6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75

https://git.kernel.org/stable/c/bd0e9289e2642f6a5c54faad304ce0f41e926d22

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/sctp/associola.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"8f840e47f190cbe61a96945c13e9551048d42cef","lessThan":"546221b86ceeba0d8fec92d46a0604bb7b62be07","versionType":"git","status":"affected"},{"version":"8f840e47f190cbe61a96945c13e9551048d42cef","lessThan":"09e722030e8148ba4ed1e42c6b2ea57bda9f9895","versionType":"git","status":"affected"},{"version":"8f840e47f190cbe61a96945c13e9551048d42cef","lessThan":"4ba5bf7ed50f235ea4581de8e7a0002f4ed287b0","versionType":"git","status":"affected"},{"version":"8f840e47f190cbe61a96945c13e9551048d42cef","lessThan":"6201cd1d70f1670c5b31ac506e7ab2fa7b8e7f75","versionType":"git","status":"affected"},{"version":"8f840e47f190cbe61a96945c13e9551048d42cef","lessThan":"bd0e9289e2642f6a5c54faad304ce0f41e926d22","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/sctp/associola.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"4.7","status":"affected"},{"version":"0","lessThan":"4.7","versionType":"semver","status":"unaffected"},{"version":"6.6.151","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.103","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.44","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.8","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc6","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]