Messages in this thread Patch in this message | | | Date | Fri, 1 Feb 2008 16:20:59 -0800 | From | Greg KH <> | Subject | [patch 21/27] vfs: coredumping fix (CVE-2007-6206) |
| |
2.6.22-stable review patch. If anyone has any objections, please let us know.
------------------
From: Ingo Molnar <mingo@elte.hu>
vfs: coredumping fix
patch c46f739dd39db3b07ab5deb4e3ec81e1c04a91af in mainline
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> Cc: maximilian attems <max@stro.at> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/exec.c | 6 ++++++ 1 file changed, 6 insertions(+)
--- a/fs/exec.c +++ b/fs/exec.c @@ -1561,6 +1561,12 @@ int do_coredump(long signr, int exit_cod 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) --
| |