Messages in this thread Patch in this message | | | Date | Sat, 22 Dec 2007 12:37:35 +0100 | From | "Oliver Pinter (Pintér Olivér)" <> | Subject | [2.6.22.y] CVE2007-6206 fix |
| |
-- Thanks, Oliver I backported this patch to 2.6.22.y tree.
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-6206
---
original patch:
c46f739dd39db3b07ab5deb4e3ec81e1c04a91af in linux-2.6.git
Ingo Molnar [Wed, 28 Nov 2007 12:59:18 +0000 (13:59 +0100)] 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: Oliver Pinter <oliver.pntr@gmail.com>
--- fs/exec.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/fs/exec.c b/fs/exec.c index 3da429d..224e973 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -1561,6 +1561,12 @@ 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) | |