CVE-2022-32296
kernel: insufficient TCP source port randomness leads to client identification
Severity
UnknownRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 5, 2022
Updated · October 29, 2026
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.
Statement
This flaw was found to be a duplicate of CVE-2022-1012. Please see https://access.redhat.com/security/cve/CVE-2022-1012 for information about affected products and security errata.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 0CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N
CWE-341 · Predictable from Observable State