From: Thorsten Blum <thorsten.blum@linux.dev>
To: Andrew Lunn <andrew+netdev@lunn.ch>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Kees Cook <kees@kernel.org>,
"Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Thorsten Blum <thorsten.blum@linux.dev>,
Simon Horman <horms@kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hardening@vger.kernel.org
Subject: [PATCH RESEND] crypto: af_alg - Annotate struct af_alg_iv with __counted_by
Date: Mon, 5 Jan 2026 13:24:03 +0100 [thread overview]
Message-ID: <20260105122402.2685-2-thorsten.blum@linux.dev> (raw)
Add the __counted_by() compiler attribute to the flexible array member
'iv' to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
include/uapi/linux/if_alg.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/if_alg.h b/include/uapi/linux/if_alg.h
index b35871cbeed7..4f51e198ac2e 100644
--- a/include/uapi/linux/if_alg.h
+++ b/include/uapi/linux/if_alg.h
@@ -42,7 +42,7 @@ struct sockaddr_alg_new {
struct af_alg_iv {
__u32 ivlen;
- __u8 iv[];
+ __u8 iv[] __counted_by(ivlen);
};
/* Socket options */
--
Thorsten Blum <thorsten.blum@linux.dev>
GPG: 1D60 735E 8AEF 3BE4 73B6 9D84 7336 78FD 8DFE EAD4
next reply other threads:[~2026-01-05 12:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-05 12:24 Thorsten Blum [this message]
2026-01-12 22:30 ` [PATCH RESEND] crypto: af_alg - Annotate struct af_alg_iv with __counted_by Kees Cook
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