From: Eric Biggers Date: Wed, 24 Sep 2025 20:18:22 +0000 (-0700) Subject: crypto: af_alg - Fix incorrect boolean values in af_alg_ctx X-Git-Tag: v6.6.109~30 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8703940bd30b5ad94408d28d7192db2491cd3592;p=thirdparty%2Fkernel%2Fstable.git crypto: af_alg - Fix incorrect boolean values in af_alg_ctx commit d0ca0df179c4b21e2a6c4a4fb637aa8fa14575cb upstream. Commit 1b34cbbf4f01 ("crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg") changed some fields from bool to 1-bit bitfields of type u32. However, some assignments to these fields, specifically 'more' and 'merge', assign values greater than 1. These relied on C's implicit conversion to bool, such that zero becomes false and nonzero becomes true. With a 1-bit bitfields of type u32 instead, mod 2 of the value is taken instead, resulting in 0 being assigned in some cases when 1 was intended. Fix this by restoring the bool type. Fixes: 1b34cbbf4f01 ("crypto: af_alg - Disallow concurrent writes in af_alg_sendmsg") Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- diff --git a/include/crypto/if_alg.h b/include/crypto/if_alg.h index 7402bf3e037ee..2fe6abb2ca803 100644 --- a/include/crypto/if_alg.h +++ b/include/crypto/if_alg.h @@ -150,7 +150,7 @@ struct af_alg_ctx { size_t used; atomic_t rcvused; - u32 more:1, + bool more:1, merge:1, enc:1, write:1,