diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/CVE-2023-2156.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/CVE-2023-2156.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/CVE-2023-2156.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/CVE-2023-2156.patch new file mode 100644 index 000000000..3ab2ef7c0 --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/CVE-2023-2156.patch @@ -0,0 +1,39 @@ +From 4e006c7a6dac0ead4c1bf606000aa90a372fc253 Mon Sep 17 00:00:00 2001 +From: Alexander Aring <aahringo@redhat.com> +Date: Mon, 17 Apr 2023 09:00:52 -0400 +Subject: [PATCH] net: rpl: fix rpl header size calculation + +This patch fixes a missing 8 byte for the header size calculation. The +ipv6_rpl_srh_size() is used to check a skb_pull() on skb->data which +points to skb_transport_header(). Currently we only check on the +calculated addresses fields using CmprI and CmprE fields, see: + +https://www.rfc-editor.org/rfc/rfc6554#section-3 + +there is however a missing 8 byte inside the calculation which stands +for the fields before the addresses field. Those 8 bytes are represented +by sizeof(struct ipv6_rpl_sr_hdr) expression. + +Fixes: 8610c7c6e3bd ("net: ipv6: add support for rpl sr exthdr") +Signed-off-by: Alexander Aring <aahringo@redhat.com> +Reported-by: maxpl0it <maxpl0it@protonmail.com> +Reviewed-by: David Ahern <dsahern@kernel.org> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + net/ipv6/rpl.c | 3 ++- + 1 file changed, 2 insertions(+), 1 deletion(-) + +diff --git a/net/ipv6/rpl.c b/net/ipv6/rpl.c +index 488aec9e1a74f3..d1876f19222552 100644 +--- a/net/ipv6/rpl.c ++++ b/net/ipv6/rpl.c +@@ -32,7 +32,8 @@ static void *ipv6_rpl_segdata_pos(const struct ipv6_rpl_sr_hdr *hdr, int i) + size_t ipv6_rpl_srh_size(unsigned char n, unsigned char cmpri, + unsigned char cmpre) + { +- return (n * IPV6_PFXTAIL_LEN(cmpri)) + IPV6_PFXTAIL_LEN(cmpre); ++ return sizeof(struct ipv6_rpl_sr_hdr) + (n * IPV6_PFXTAIL_LEN(cmpri)) + ++ IPV6_PFXTAIL_LEN(cmpre); + } + + void ipv6_rpl_srh_decompress(struct ipv6_rpl_sr_hdr *outhdr, |