CVE-2021-23133 is a race condition vulnerability in the Linux kernel's SCTP socket implementation (net/sctp/socket.c) affecting versions before 5.12-rc8, including distributions like Debian and Fedora. This flaw allows an attacker with network service privileges or an unprivileged user (under specific BPF configurations) to achieve kernel privilege escalation. The vulnerability has a CVSS score of 7.0 (HIGH), indicating a local attack vector with high complexity, but leading to full confidentiality, integrity, and availability compromise. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.12-rc8CPE match | cpe:2.3:a:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.10, < 4.14.232CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.15, < 4.19.189CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 4.20, < 5.4.114CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | ||
>= 5.5, < 5.10.32CPE matchmatch criteria | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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