CVE-2021-47397
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2021
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb
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
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | 77bc7dcf0fcc1519341a91788d7a2914fcfddf6d | Unavailable | None listed |
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | 8c630a7b4f9dec63f08bd881ab77984a724a5124 | Unavailable | None listed |
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | ec018021cf445abbe8e2f3e2a7f1dcc813cb8ea1 | Unavailable | None listed |
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | 9c6591ae8e63f93c895ad5e2703c36c548aac997 | Unavailable | None listed |
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | 8180611c238e11676612eb2a9828b1c7a3a4d77b | Unavailable | None listed |
| 3acb50c18d8d6650f10919464ade4dcdaf41d62f | affected | git | f7e745f8e94492a8ac0b0a26e25f2b19d342918f | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.8 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 4.8 | Unavailable | None listed |
| 4.14.249 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.209 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.151 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.71 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.14.10 | unaffected | semver | Unavailable | 5.14.* | None listed |
| 5.15 | unaffected | original_commit_for_fix | Unavailable | * | None listed |