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| author | Jeff Layton <jlayton@kernel.org> | 2019-06-04 14:35:18 -0400 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2019-07-08 14:01:43 +0200 |
| commit | 51fc7ab44519adc6684ac6575826f8b1a16ee4b3 (patch) | |
| tree | ed68843dde9b390f0487b4cd692478bb2e3a7364 /net | |
| parent | dcbc919a5dc8c2629684a113a90c0b6fe10c3462 (diff) | |
| download | linux-51fc7ab44519adc6684ac6575826f8b1a16ee4b3.tar.bz2 | |
libceph: fix watch_item_t decoding to use ceph_decode_entity_addr
While we're in there, let's also fix up the decoder to do proper
bounds checking.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/osd_client.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c index 9a8eca5eda65..54170a35ecec 100644 --- a/net/ceph/osd_client.c +++ b/net/ceph/osd_client.c @@ -4914,20 +4914,26 @@ static int decode_watcher(void **p, void *end, struct ceph_watch_item *item) ret = ceph_start_decoding(p, end, 2, "watch_item_t", &struct_v, &struct_len); if (ret) - return ret; + goto bad; + + ret = -EINVAL; + ceph_decode_copy_safe(p, end, &item->name, sizeof(item->name), bad); + ceph_decode_64_safe(p, end, item->cookie, bad); + ceph_decode_skip_32(p, end, bad); /* skip timeout seconds */ - ceph_decode_copy(p, &item->name, sizeof(item->name)); - item->cookie = ceph_decode_64(p); - *p += 4; /* skip timeout_seconds */ if (struct_v >= 2) { - ceph_decode_copy(p, &item->addr, sizeof(item->addr)); - ceph_decode_addr(&item->addr); + ret = ceph_decode_entity_addr(p, end, &item->addr); + if (ret) + goto bad; + } else { + ret = 0; } dout("%s %s%llu cookie %llu addr %s\n", __func__, ENTITY_NAME(item->name), item->cookie, ceph_pr_addr(&item->addr)); - return 0; +bad: + return ret; } static int decode_watchers(void **p, void *end, |