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(parent: 91bcae3) | patch
sh: sanitize the flags on sigreturn
authorAl Viro <viro@zeniv.linux.org.uk>
Mon, 6 Mar 2023 01:20:30 +0000 (01:20 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 30 Mar 2023 10:47:54 +0000 (12:47 +0200)
commitf6cf5f13fa5b76344e29263e895ebc51874d6048
tree0f5fd4662b64913c1f3a4f8fca7644d269d122e3tree | snapshot
parent91bcae3df2a4768dd8c9a323f80b4940af1b4f9acommit | diff
sh: sanitize the flags on sigreturn

[ Upstream commit 573b22ccb7ce9ab7f0539a2e11a9d3609a8783f5 ]

We fetch %SR value from sigframe; it might have been modified by signal
handler, so we can't trust it with any bits that are not modifiable in
user mode.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/sh/include/asm/processor_32.h diff | blob | history
arch/sh/kernel/signal_32.c diff | blob | history
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