CVE-2021-4203 — Race Condition in Kernel
Severity
6.8MEDIUMNVD
EPSS
0.1%
top 74.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 25
Latest updateApr 12
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:HExploitability: 1.6 | Impact: 5.2
Affected Packages7 packages
Patches
🔴Vulnerability Details
3GHSA▶
GHSA-rh28-76xv-jcqc: A use-after-free read flaw was found in sock_getsockopt() in net/core/sock↗2022-03-26
OSV▶
CVE-2021-4203: A use-after-free read flaw was found in sock_getsockopt() in net/core/sock↗2022-03-25
CVEList▶
CVE-2021-4203: A use-after-free read flaw was found in sock_getsockopt() in net/core/sock↗2022-03-25
📋Vendor Advisories
6Microsoft▶
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 ↗2022-03-08