net/tcp-md5: Fix MAC comparison to be constant-time

Browse source

commit 46d0d6f50d upstream.

To prevent timing attacks, MACs need to be compared in constant
time.  Use the appropriate helper function for this.

Fixes: cfb6eeb4c8 ("[TCP]: MD5 Signature Option (RFC2385) support.")
Fixes: 658ddaaf66 ("tcp: md5: RST: getting md5 key from listener")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20260302203409.13388-1-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Li hongliang <1468888505@139.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Eric Biggers 2026-03-02 12:34:09 -08:00 • committed by Greg Kroah-Hartman

parent 72ab76ea68

commit ff44ec94d4

2 changed files with 6 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

net/ipv4/tcp_ipv4.c

View file

5

net/ipv6/tcp_ipv6.c

View file