diff options
Diffstat (limited to 'fs/proc/kcore.c')
| -rw-r--r-- | fs/proc/kcore.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index bd3ac9dca25212..5c89a07e3d7f54 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -509,7 +509,12 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos) if (kern_addr_valid(start)) { unsigned long n; - n = copy_to_user(buffer, (char *)start, tsz); + /* + * Using bounce buffer to bypass the + * hardened user copy kernel text checks. + */ + memcpy(buf, (char *) start, tsz); + n = copy_to_user(buffer, buf, tsz); /* * We cannot distinguish between fault on source * and fault on destination. When this happens |