diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/exec.c | 7 |
1 files changed, 2 insertions, 5 deletions
| @@ -1060,23 +1060,20 @@ int check_unsafe_exec(struct linux_binprm *bprm) | |||
| 1060 | { | 1060 | { |
| 1061 | struct task_struct *p = current, *t; | 1061 | struct task_struct *p = current, *t; |
| 1062 | unsigned long flags; | 1062 | unsigned long flags; |
| 1063 | unsigned n_fs, n_sighand; | 1063 | unsigned n_fs; |
| 1064 | int res = 0; | 1064 | int res = 0; |
| 1065 | 1065 | ||
| 1066 | bprm->unsafe = tracehook_unsafe_exec(p); | 1066 | bprm->unsafe = tracehook_unsafe_exec(p); |
| 1067 | 1067 | ||
| 1068 | n_fs = 1; | 1068 | n_fs = 1; |
| 1069 | n_sighand = 1; | ||
| 1070 | write_lock(&p->fs->lock); | 1069 | write_lock(&p->fs->lock); |
| 1071 | lock_task_sighand(p, &flags); | 1070 | lock_task_sighand(p, &flags); |
| 1072 | for (t = next_thread(p); t != p; t = next_thread(t)) { | 1071 | for (t = next_thread(p); t != p; t = next_thread(t)) { |
| 1073 | if (t->fs == p->fs) | 1072 | if (t->fs == p->fs) |
| 1074 | n_fs++; | 1073 | n_fs++; |
| 1075 | n_sighand++; | ||
| 1076 | } | 1074 | } |
| 1077 | 1075 | ||
| 1078 | if (p->fs->users > n_fs || | 1076 | if (p->fs->users > n_fs) { |
| 1079 | atomic_read(&p->sighand->count) > n_sighand) { | ||
| 1080 | bprm->unsafe |= LSM_UNSAFE_SHARE; | 1077 | bprm->unsafe |= LSM_UNSAFE_SHARE; |
| 1081 | } else { | 1078 | } else { |
| 1082 | if (p->fs->in_exec) | 1079 | if (p->fs->in_exec) |
