In the Linux kernel, the following vulnerability has been resolved:
sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
We should always check if skb_header_pointer’s return is NULL before
using it, otherwise it may cause null-ptr-deref, as syzbot reported:
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
RIP: 0010:sctp_rcv_ootb net/sctp/input.c:705 [inline]
RIP: 0010:sctp_rcv+0x1d84/0x3220 net/sctp/input.c:196
Call Trace:
<IRQ>
sctp6_rcv+0x38/0x60 net/sctp/ipv6.c:1109
ip6_protocol_deliver_rcu+0x2e9/0x1ca0 net/ipv6/ip6_input.c:422
ip6_input_finish+0x62/0x170 net/ipv6/ip6_input.c:463
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_input+0x9c/0xd0 net/ipv6/ip6_input.c:472
dst_input include/net/dst.h:460 [inline]
ip6_rcv_finish net/ipv6/ip6_input.c:76 [inline]
NF_HOOK include/linux/netfilter.h:307 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0x28c/0x3c0 net/ipv6/ip6_input.c:297
Vendor | Product | Version | CPE |
---|---|---|---|
linux | linux_kernel | * | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/sctp/input.c"
],
"versions": [
{
"version": "3acb50c18d8d",
"lessThan": "77bc7dcf0fcc",
"status": "affected",
"versionType": "git"
},
{
"version": "3acb50c18d8d",
"lessThan": "8c630a7b4f9d",
"status": "affected",
"versionType": "git"
},
{
"version": "3acb50c18d8d",
"lessThan": "ec018021cf44",
"status": "affected",
"versionType": "git"
},
{
"version": "3acb50c18d8d",
"lessThan": "9c6591ae8e63",
"status": "affected",
"versionType": "git"
},
{
"version": "3acb50c18d8d",
"lessThan": "8180611c238e",
"status": "affected",
"versionType": "git"
},
{
"version": "3acb50c18d8d",
"lessThan": "f7e745f8e944",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"net/sctp/input.c"
],
"versions": [
{
"version": "4.8",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.8",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.14.249",
"lessThanOrEqual": "4.14.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.209",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.151",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.71",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.14.10",
"lessThanOrEqual": "5.14.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6d
git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77b
git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124
git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997
git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1
git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918f