Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux

Merge tag 'lsm-pr-20221107' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm

Pull lsm fix from Paul Moore:
"A small capability patch to fix an instance of undefined behavior in a
shift operator caused when shifting a signed value too far.

While the fix is trivial and I can't imagine it causing a problem in a
backport, I'm not explicitly marking it for stable on the off chance
that there is some system out there which is relying on some wonky
unexpected behavior which this patch could break; *if* it does break,
IMO it's better that to happen in a minor or -rcX release and not in a
stable backport"

* tag 'lsm-pr-20221107' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
capabilities: fix undefined behavior in bit shift for CAP_TO_MASK

+1 -1
+1 -1
include/uapi/linux/capability.h
··· 426 426 */ 427 427 428 428 #define CAP_TO_INDEX(x) ((x) >> 5) /* 1 << 5 == bits in __u32 */ 429 - #define CAP_TO_MASK(x) (1 << ((x) & 31)) /* mask for indexed __u32 */ 429 + #define CAP_TO_MASK(x) (1U << ((x) & 31)) /* mask for indexed __u32 */ 430 430 431 431 432 432 #endif /* _UAPI_LINUX_CAPABILITY_H */