A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: palo_alto
Published: 2021-04-22T18:00:18.880759Z
Updated: 2024-09-16T19:04:20.684Z
Reserved: 2021-01-06T00:00:00
Link: CVE-2021-23133
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-04-22T18:15:08.123
Modified: 2024-11-21T05:51:16.080
Link: CVE-2021-23133
Redhat