Re: [PATCH] fs/coredump: open coredump file in O_WRONLY instead of O_RDWR

[Vladimir Sementsov-Ogievskiy <vsementsov@xxxxxxxxxxxxxx>]

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