在 2021/7/31 11:14, Yu Changchun 写道:
From: Russell King
<rmk+kernel(a)armlinux.org.uk>
stable inclusion
from linux-4.19.177
commit 80ef523d2cb719c3de66787e922a96b5099d2fbb
category: bugfix
issue: #I42HM6
CVE: CVE-2021-21781
--------------------------------
[ Upstream commit 9c698bff66ab4914bb3d71da7dc6112519bde23e ]
Ensure that the signal page contains our poison instruction to increase
the protection against ROP attacks and also contains well defined
contents.
Acked-by: Will Deacon <will(a)kernel.org>
Signed-off-by: Russell King <rmk+kernel(a)armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
Signed-off-by: Yang Yingliang <yangyingliang(a)huawei.com>
Signed-off-by: Yu Changchun <yuchangchun1(a)huawei.com>
---
arch/arm/kernel/signal.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
Looks good to me.