Messages in this thread Patch in this message | | | From | Vladimir Sementsov-Ogievskiy <> | Subject | [PATCH] fs/coredump: open coredump file in O_WRONLY instead of O_RDWR | Date | Thu, 20 Apr 2023 15:04:09 +0300 |
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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@yandex-team.ru> --- 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) -- 2.34.1
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