Re: [PATCH] fs/coredump: open coredump file in O_WRONLY instead of O_RDWR
From: Vladimir Sementsov-Ogievskiy
Date: Wed May 10 2023 - 11:19:31 EST
Gently ping.
Is there any interest?
On 20.04.23 15:04, Vladimir Sementsov-Ogievskiy wrote:
This makes it possible to make stricter apparmor profile and don't
allow the program to read any coredump in the system.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxxx>
---
fs/coredump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/coredump.c b/fs/coredump.c
index 5df1e6e1eb2b..8f263a389175 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -646,7 +646,7 @@ void do_coredump(const kernel_siginfo_t *siginfo)
} else {
struct mnt_idmap *idmap;
struct inode *inode;
- int open_flags = O_CREAT | O_RDWR | O_NOFOLLOW |
+ int open_flags = O_CREAT | O_WRONLY | O_NOFOLLOW |
O_LARGEFILE | O_EXCL;
if (cprm.limit < binfmt->min_coredump)
--
Best regards,
Vladimir