mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-14 06:35:12 +00:00
cgroup: reject cgroup names with '\n'
/proc/<pid>/cgroup contains one cgroup path on each line. If cgroup names are allowed to contain "\n", applications cannot parse /proc/<pid>/cgroup safely. Signed-off-by: Alban Crequy <alban.crequy@collabora.co.uk> Signed-off-by: Tejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
This commit is contained in:
parent
7d1311b93e
commit
71b1fb5c44
1 changed files with 5 additions and 0 deletions
|
@ -4543,6 +4543,11 @@ static int cgroup_mkdir(struct kernfs_node *parent_kn, const char *name,
|
|||
struct cftype *base_files;
|
||||
int ssid, ret;
|
||||
|
||||
/* Do not accept '\n' to prevent making /proc/<pid>/cgroup unparsable.
|
||||
*/
|
||||
if (strchr(name, '\n'))
|
||||
return -EINVAL;
|
||||
|
||||
parent = cgroup_kn_lock_live(parent_kn);
|
||||
if (!parent)
|
||||
return -ENODEV;
|
||||
|
|
Loading…
Reference in a new issue