🛡️ UBUNTU-CVE-2021-47397
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-05-21
Updated 2026-06-15
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
linux 5.4.0-91.102
linux-allwinner-5.19
linux-aws 5.4.0-1060.63
linux-aws-5.0
linux-aws-5.11
linux-aws-5.13
linux-aws-5.19
linux-aws-5.3
linux-aws-5.4 5.4.0-1060.63~18.04.1
linux-aws-5.8
linux-aws-6.2
linux-aws-fips
linux-aws-hwe 4.15.0-1116.123~16.04.1
linux-azure 5.4.0-1064.67
linux-azure-4.15 4.15.0-1127.140
linux-azure-5.11
linux-azure-5.13
linux-azure-5.19
linux-azure-5.3
linux-azure-5.4 5.4.0-1064.67~18.04.1
linux-azure-5.8
linux-azure-6.2
linux-azure-edge
linux-azure-fde
linux-azure-fde-5.19
linux-azure-fde-6.2
linux-azure-fips
linux-bluefield
linux-fips
linux-gcp 5.4.0-1058.62
linux-gcp-4.15 4.15.0-1112.126
linux-gcp-5.11
linux-gcp-5.13
linux-gcp-5.19
linux-gcp-5.3
linux-gcp-5.4 5.4.0-1058.62~18.04.1
linux-gcp-5.8
linux-gcp-6.2
linux-gcp-fips
linux-gke
linux-gke-4.15
linux-gke-5.15
linux-gke-5.4
linux-gkeop 5.4.0-1027.28
linux-gkeop-5.4
linux-hwe
linux-hwe-5.11
linux-hwe-5.13
linux-hwe-5.19
linux-hwe-5.4 5.4.0-91.102~18.04.1
linux-hwe-5.8
linux-hwe-6.2
linux-hwe-edge
linux-ibm 5.4.0-1008.9
linux-intel-5.13
linux-intel-iot-realtime
linux-kvm 5.4.0-1050.52
linux-lowlatency-hwe-5.19
linux-lowlatency-hwe-6.2
linux-nvidia
linux-nvidia-6.2
linux-oem
linux-oem-5.10
linux-oem-5.13
linux-oem-5.14
linux-oem-5.17
linux-oem-5.6
linux-oem-6.0
linux-oem-6.1
linux-oracle 5.4.0-1058.62
linux-oracle-5.0
linux-oracle-5.11
linux-oracle-5.13
linux-oracle-5.3
linux-oracle-5.4 5.4.0-1058.62~18.04.1
linux-oracle-5.8
linux-raspi 5.4.0-1047.52
linux-raspi-5.4 5.4.0-1047.52~18.04.1
linux-raspi-realtime
linux-raspi2
linux-realtime
linux-riscv
linux-riscv-5.11
linux-riscv-5.19
linux-riscv-5.8
linux-starfive-5.19
linux-starfive-6.2

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