* [PATCH] crypto: af_alg - Annotate struct af_alg_iv with __counted_by
@ 2025-11-14 0:01 Thorsten Blum
2025-11-21 11:44 ` Simon Horman
0 siblings, 1 reply; 2+ messages in thread
From: Thorsten Blum @ 2025-11-14 0:01 UTC (permalink / raw)
To: Andrew Lunn, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Kees Cook, Gustavo A. R. Silva
Cc: Thorsten Blum, netdev, linux-kernel, linux-hardening
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.
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 */
--
2.51.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] crypto: af_alg - Annotate struct af_alg_iv with __counted_by
2025-11-14 0:01 [PATCH] crypto: af_alg - Annotate struct af_alg_iv with __counted_by Thorsten Blum
@ 2025-11-21 11:44 ` Simon Horman
0 siblings, 0 replies; 2+ messages in thread
From: Simon Horman @ 2025-11-21 11:44 UTC (permalink / raw)
To: Thorsten Blum
Cc: Andrew Lunn, David S. Miller, Eric Dumazet, Jakub Kicinski,
Paolo Abeni, Kees Cook, Gustavo A. R. Silva, netdev, linux-kernel,
linux-hardening
On Fri, Nov 14, 2025 at 01:01:54AM +0100, Thorsten Blum wrote:
> 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.
>
> Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Reviewed-by: Simon Horman <horms@kernel.org>
^ permalink raw reply [flat|nested] 2+ messages in thread
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