CVE-2022-32296

Description

The Linux kernel before 5.17.9 allows TCP servers to identify clients by observing what source ports are used. This occurs because of use of Algorithm 4 ("Double-Hash Port Selection Algorithm") of RFC 6056.

Category

3.3
CVSS
Severity: Low
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory debian.org Vendor Advisory kernel.org Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5 patch vendor advisory mailing list
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9 release notes vendor advisory
https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html mailing list
https://www.debian.org/security/2022/dsa-5173 vendor advisory
https://arxiv.org/abs/2209.12993
https://github.com/0xkol/rfc6056-device-tracker

Frequently Asked Questions

What is the severity of CVE-2022-32296?
CVE-2022-32296 has been scored as a low severity vulnerability.
How to fix CVE-2022-32296?
To fix CVE-2022-32296, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-32296 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-32296 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.