Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2021-4203

A use-after-free read flaw was found in sock_getsockopt() in net/core/sock.c due to SO_PEERCRED and SO_PEERGROUPS race with listen() (and connect()) in the Linux kernel. In this flaw, an attacker with a user privileges may crash the system or leak internal kernel information.

  • Published: Mar 25, 2022
  • Updated: Apr 14, 2023
  • CVE: CVE-2021-4203
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.8
  • AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS v2:

  • Severity: Low
  • Score: 4.9
  • AV:N/AC:M/Au:S/C:P/I:N/A:P