CVE-2021-45095

Name: CVE-2021-45095
Creator: NVD / NIST
Published: 2021-12-16T04:15:06.803+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2021-45095 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.34%

25.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	<= 5.15.8
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Debian	Debian Linux	11.0

References

https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=bcd0f93353326954817a4f9fa55ec57fb38acbb0Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/bcd0f93353326954817a4f9fa55ec57fb38acbb0Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5050Third Party Advisory
https://www.debian.org/security/2022/dsa-5096Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=bcd0f93353326954817a4f9fa55ec57fb38acbb0Patch, Vendor Advisory
https://github.com/torvalds/linux/commit/bcd0f93353326954817a4f9fa55ec57fb38acbb0Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2022/dsa-5050Third Party Advisory
https://www.debian.org/security/2022/dsa-5096Third Party Advisory

Timeline

Published: Dec 16, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-45095?

pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.

How severe is CVE-2021-45095?

CVE-2021-45095 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2021-45095?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-45095?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST