Commit c46f739d authored Nov 28, 2007 by Ingo Molnar Committed by Linus Torvalds Nov 28, 2007

vfs: coredumping fix

fix: http://bugzilla.kernel.org/show_bug.cgi?id=3043



only allow coredumping to the same uid that the coredumping
task runs under.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Alan Cox <alan@redhat.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent a531a141

fs/exec.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -1780,6 +1780,12 @@ int do_coredump(long signr, int exit_code, struct pt_regs * regs)
		but keep the previous behaviour for now. */
		if (!ispipe && !S_ISREG(inode->i_mode))
		goto close_fail;
		/*
		* Dont allow local users get cute and trick others to coredump
		* into their pre-created files:
		*/
		if (inode->i_uid != current->fsuid)
		goto close_fail;
		if (!file->f_op)
		goto close_fail;
		if (!file->f_op->write)