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CVE-2021-4203

Published: Mar 25, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-362
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
1.8%
Top 24.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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 Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-362CWE-416

Affected Products

linux kernellinux
On-premOS
Operating Systems
active iq unified managernetappHardware Firmware
e-series santricity os controllernetappHardware Firmware
element softwarenetappHardware Firmware
hci management nodenetappHardware Firmware
linuxoss-projectOperating Systemsaka the linux kernel
netappcommercialUSHardware Firmware
and 16 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=2230&can=7&q=modified-after%3Atoday-30&sort=-modified&colspec=ID%20Type%20Status%20Priority%20Milestone%20Owner%20Summary%20Modified%20Cve&cells=tiles&redir=1
bugs.chromium.org
https://bugzilla.redhat.com/show_bug.cgi?id=2036934
bugzilla.redhat.com
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=35306eb23814
git.kernel.org
and 17 more references View all →

Timeline

Published
Mar 25, 2022
Last Updated
Nov 21, 2024

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