PoC Index85,101 CVEs with PoCs

CVE-2021-23133

Linux Kernel sctp_destroy_sock race condition

HIGH 7.0EPSS 0.5%

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.

Affected
Linux Kernel
CVSS v3.1 NVD
7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1 PALOALTONETWORKS
6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 NVD
6.9 MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
EPSS
0.47% chance of exploitation in the next 30 days, 40th percentile
Published
2021-04-22
Updated
2024-09-16

Proof-of-concept exploits (1)

Security advisories

References