CVE-2021-47397
- Source
- https://cve.org/CVERecord?id=CVE-2021-47397
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47397.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2021-47397
- Downstream
- Related
- Published
- 2024-05-21T15:15:25Z
- Modified
- 2026-03-15T14:09:21Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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: 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
- References
-
- https://git.kernel.org/stable/c/77bc7dcf0fcc1519341a91788d7a2914fcfddf6d
- https://git.kernel.org/stable/c/8180611c238e11676612eb2a9828b1c7a3a4d77b
- https://git.kernel.org/stable/c/8c630a7b4f9dec63f08bd881ab77984a724a5124
- https://git.kernel.org/stable/c/9c6591ae8e63f93c895ad5e2703c36c548aac997
- https://git.kernel.org/stable/c/ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1
- https://git.kernel.org/stable/c/f7e745f8e94492a8ac0b0a26e25f2b19d342918f
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-47397.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "4.8"
},
{
"fixed": "4.14.249"
}
]
},
{
"events": [
{
"introduced": "4.15"
},
{
"fixed": "4.19.209"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.151"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.71"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.14.10"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc3"
}
]
}
]