The patch titled
Allow access to /proc/$PID/fd after setuid()
has been added to the -mm tree. Its filename is
allow-access-to-proc-pid-fd-after-setuid-update-2.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Allow access to /proc/$PID/fd after setuid()
From: Alexey Dobriyan <adobriyan@xxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/base.c | 9 ++-------
1 files changed, 2 insertions(+), 7 deletions(-)
diff -puN fs/proc/base.c~allow-access-to-proc-pid-fd-after-setuid-update-2 fs/proc/base.c
--- a/fs/proc/base.c~allow-access-to-proc-pid-fd-after-setuid-update-2
+++ a/fs/proc/base.c
@@ -1420,18 +1420,13 @@ static struct file_operations proc_fd_op
static int proc_fd_permission(struct inode *inode, int mask,
struct nameidata *nd)
{
- struct task_struct *tsk;
int rv;
rv = generic_permission(inode, mask, NULL);
if (rv == 0)
return 0;
- tsk = get_proc_task(inode);
- if (tsk) {
- if (tsk == current)
- rv = 0;
- put_task_struct(tsk);
- }
+ if (task_pid(current) == proc_pid(inode))
+ rv = 0;
return rv;
}
_
Patches currently in -mm which might be from adobriyan@xxxxxxxxxx are
git-net.patch
revert-x86_64-mm-msr-on-cpu.patch
rdmsr_on_cpu-wrmsr_on_cpu.patch
sysctl_ms_jiffies-fix-oldlen-semantics.patch
consolidate-default-sched_clock.patch
fix-rmmod-read-write-races-in-proc-entries.patch
sn2-use-static-proc_fops.patch
consolidate-bust_spinlocks.patch
extract-and-use-wake_up_klogd.patch
allow-access-to-proc-pid-fd-after-setuid.patch
allow-access-to-proc-pid-fd-after-setuid-fix.patch
allow-access-to-proc-pid-fd-after-setuid-update.patch
allow-access-to-proc-pid-fd-after-setuid-update-2.patch
lutimesat-simplify-utime2.patch
lutimesat-extend-do_utimes-with-flags.patch
lutimesat-actual-syscall-and-wire-up-on-i386.patch
-
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