The ctx in struct lsm_ctx is an array of size ctx_len, tell the compiler about this using __counted_by() where supported to improve the ability to detect overflow issues.
Reported-by: Aishwarya TCV <[email protected]> Signed-off-by: Mark Brown <[email protected]> --- Changes in v2: - Add explicit stddef.h inclusion in case __counted_by() definition isn't otherwise pulled in. - Link to v1: https://lore.kernel.org/r/[email protected] --- include/uapi/linux/lsm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/lsm.h b/include/uapi/linux/lsm.h index f0386880a78e..f8aef9ade549 100644 --- a/include/uapi/linux/lsm.h +++ b/include/uapi/linux/lsm.h @@ -9,6 +9,7 @@ #ifndef _UAPI_LINUX_LSM_H #define _UAPI_LINUX_LSM_H +#include <linux/stddef.h> #include <linux/types.h> #include <linux/unistd.h> @@ -36,7 +37,7 @@ struct lsm_ctx { __u64 flags; __u64 len; __u64 ctx_len; - __u8 ctx[]; + __u8 ctx[] __counted_by(ctx_len); }; /* --- base-commit: ec4e9d630a64df500641892f4e259e8149594a99 change-id: 20231221-lsm-fix-counted-by-f9fd827e26aa Best regards, -- Mark Brown <[email protected]>
