In the Linux kernel, the following vulnerability has been resolved:

net: ipv4: bound TCP reordering sysctl writes and MTU probe sizes

Reject invalid `net.ipv4.tcp_reordering` values before they reach TCP
socket state. The sysctl is stored as an `int` but copied into the
`u32` `tp->reordering` field for new sockets, so negative writes wrap
to large values.

With `tcp_mtu_probing=2`, the wrapped value can overflow the
`tcp_mtu_probe()` size calculation and drive the MTU probing path into
an out-of-bounds read. Route `tcp_reordering` writes through
`proc_dointvec_minmax()` and require it to be at least 1. Also require
`tcp_max_reordering` to be at least 1 so the configured maximum cannot
become negative either.

When registering the table for a non-init network namespace, relocate
`extra2` pointers that refer into `init_net.ipv4` so the
`tcp_reordering` upper bound follows that namespace's
`tcp_max_reordering`.

Harden `tcp_mtu_probe()` itself by computing `size_needed` as `u64`.
This keeps the send queue and window checks from being bypassed through
signed integer overflow.

https://git.kernel.org/stable/c/27ddf4486c7dbf5bdd393fa8bef6b67179796d98

https://git.kernel.org/stable/c/782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae

https://git.kernel.org/stable/c/99206ce2244f8a3ed64298d0667c9055845a5dc7

https://git.kernel.org/stable/c/a094ac95d3b69adfa1676eb9c8eae6835d4f1671

https://git.kernel.org/stable/c/bbae351c0f32f7c200249e4aa6561b2b419dcf69

https://git.kernel.org/stable/c/e81f805824a8109504fce090641b17d135b48cd1

https://git.kernel.org/stable/c/efb8763d7bbb40cff4cc55a6b62c3095a038149c

https://git.kernel.org/stable/c/f0d88a4cd03affff6c08adf6c63964e235aede43

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["net/ipv4/sysctl_net_ipv4.c","net/ipv4/tcp_output.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"f0d88a4cd03affff6c08adf6c63964e235aede43","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"27ddf4486c7dbf5bdd393fa8bef6b67179796d98","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"782708ca1ea1f68b8cbb5ea3a7f5f18d0000efae","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"e81f805824a8109504fce090641b17d135b48cd1","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"99206ce2244f8a3ed64298d0667c9055845a5dc7","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"bbae351c0f32f7c200249e4aa6561b2b419dcf69","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"a094ac95d3b69adfa1676eb9c8eae6835d4f1671","versionType":"git","status":"affected"},{"version":"91cc17c0e5e5ada156a8d5787a2509d263ea6bbf","lessThan":"efb8763d7bbb40cff4cc55a6b62c3095a038149c","versionType":"git","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["net/ipv4/sysctl_net_ipv4.c","net/ipv4/tcp_output.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"2.6.24","status":"affected"},{"version":"0","lessThan":"2.6.24","versionType":"semver","status":"unaffected"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc1","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]