Ksawlii/kernel_samsung_a53x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Revert "cgroup/cpuset: Prevent UAF in proc_cpuset_show()"

Browse source 
This reverts commit 106a2662b1.
This commit is contained in:
Ksawlii 2024-11-24 00:23:50 +01:00
parent 6ab3af7f42
commit 9947944ca2
1 changed files with 4 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
kernel/cgroup/cpuset.c
View file

@ -22,7 +22,6 @@
* distribution for more details.
*/
#include "cgroup-internal.h"
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/cpuset.h>
@ -3780,14 +3779,10 @@ int proc_cpuset_show(struct seq_file *m, struct pid_namespace *ns,
if (!buf)
goto out;
rcu_read_lock();
spin_lock_irq(&css_set_lock);
css = task_css(tsk, cpuset_cgrp_id);
retval = cgroup_path_ns_locked(css->cgroup, buf, PATH_MAX,
current->nsproxy->cgroup_ns);
spin_unlock_irq(&css_set_lock);
rcu_read_unlock();
css = task_get_css(tsk, cpuset_cgrp_id);
retval = cgroup_path_ns(css->cgroup, buf, PATH_MAX,
current->nsproxy->cgroup_ns);
css_put(css);
if (retval >= PATH_MAX)
retval = -ENAMETOOLONG;
if (retval < 0)