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
Metrics
Affected Vendors & Products
References
History
Thu, 12 Sep 2024 08:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
Metrics |
ssvc
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Wed, 11 Sep 2024 13:30:00 +0000
Type | Values Removed | Values Added |
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Metrics |
ssvc
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MITRE
Status: PUBLISHED
Assigner: Linux
Published: 2024-05-21T15:03:53.431Z
Updated: 2024-09-11T17:33:42.263Z
Reserved: 2024-05-21T14:58:30.815Z
Link: CVE-2021-47397
Vulnrichment
Updated: 2024-08-04T05:39:59.634Z
NVD
Status : Awaiting Analysis
Published: 2024-05-21T15:15:25.017
Modified: 2024-05-21T16:54:26.047
Link: CVE-2021-47397
Redhat