diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 5b405f32971d..42c5128c7d1c 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -565,6 +565,10 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf, if (!table->proc_handler) goto out; + /* don't even try if the size is too large */ + if (count > KMALLOC_MAX_SIZE) + return -ENOMEM; + if (write) { kbuf = memdup_user_nul(ubuf, count); if (IS_ERR(kbuf)) { |