diff options
| -rw-r--r-- | include/net/ipv6.h | 2 | ||||
| -rw-r--r-- | net/ipv6/exthdrs_core.c | 11 | ||||
| -rw-r--r-- | net/ipv6/icmp.c | 4 | ||||
| -rw-r--r-- | security/selinux/hooks.c | 3 |
4 files changed, 8 insertions, 12 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 87c45cbfbaf6..771b47e30f86 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -416,7 +416,7 @@ extern void ipv6_push_frag_opts(struct sk_buff *skb, u8 *proto); extern int ipv6_skip_exthdr(const struct sk_buff *, int start, - u8 *nexthdrp, int len); + u8 *nexthdrp); extern int ipv6_ext_hdr(u8 nexthdr); diff --git a/net/ipv6/exthdrs_core.c b/net/ipv6/exthdrs_core.c index 6dda815c013f..315bc1fbec3f 100644 --- a/net/ipv6/exthdrs_core.c +++ b/net/ipv6/exthdrs_core.c @@ -41,8 +41,8 @@ int ipv6_ext_hdr(u8 nexthdr) * when Linux implements ESP (and maybe AUTH) headers. * --AK * - * This function parses (probably truncated) exthdr set "hdr" - * of length "len". "nexthdrp" initially points to some place, + * This function parses (probably truncated) exthdr set "hdr". + * "nexthdrp" initially points to some place, * where type of the first header can be found. * * It skips all well-known exthdrs, and returns pointer to the start @@ -63,7 +63,7 @@ int ipv6_ext_hdr(u8 nexthdr) * --ANK (980726) */ -int ipv6_skip_exthdr(const struct sk_buff *skb, int start, u8 *nexthdrp, int len) +int ipv6_skip_exthdr(const struct sk_buff *skb, int start, u8 *nexthdrp) { u8 nexthdr = *nexthdrp; @@ -71,13 +71,11 @@ int ipv6_skip_exthdr(const struct sk_buff *skb, int start, u8 *nexthdrp, int len struct ipv6_opt_hdr _hdr, *hp; int hdrlen; - if (len < (int)sizeof(struct ipv6_opt_hdr)) - return -1; if (nexthdr == NEXTHDR_NONE) return -1; hp = skb_header_pointer(skb, start, sizeof(_hdr), &_hdr); if (hp == NULL) - BUG(); + return -1; if (nexthdr == NEXTHDR_FRAGMENT) { unsigned short _frag_off, *fp; fp = skb_header_pointer(skb, @@ -97,7 +95,6 @@ int ipv6_skip_exthdr(const struct sk_buff *skb, int start, u8 *nexthdrp, int len hdrlen = ipv6_optlen(hp); nexthdr = hp->nexthdr; - len -= hdrlen; start += hdrlen; } diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 87b9082ceab2..8e0f569b883e 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -135,7 +135,7 @@ static int is_ineligible(struct sk_buff *skb) if (len < 0) return 1; - ptr = ipv6_skip_exthdr(skb, ptr, &nexthdr, len); + ptr = ipv6_skip_exthdr(skb, ptr, &nexthdr); if (ptr < 0) return 0; if (nexthdr == IPPROTO_ICMPV6) { @@ -514,7 +514,7 @@ static void icmpv6_notify(struct sk_buff *skb, int type, int code, u32 info) nexthdr = ((struct ipv6hdr *)skb->data)->nexthdr; if (ipv6_ext_hdr(nexthdr)) { /* now skip over extension headers */ - inner_offset = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &nexthdr, skb->len - sizeof(struct ipv6hdr)); + inner_offset = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &nexthdr); if (inner_offset<0) return; } else { diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 2ae7d3cb8df4..0d378141c95a 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -2855,8 +2855,7 @@ static int selinux_parse_skb_ipv6(struct sk_buff *skb, struct avc_audit_data *ad nexthdr = ip6->nexthdr; offset += sizeof(_ipv6h); - offset = ipv6_skip_exthdr(skb, offset, &nexthdr, - skb->tail - skb->head - offset); + offset = ipv6_skip_exthdr(skb, offset, &nexthdr); if (offset < 0) goto out; |