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.
References (6)
Scores
CVSS v3
3.3
EPSS
0.0005
EPSS Percentile
16.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Details
CWE
CWE-330
Status
published
Products (1)
linux/linux_kernel
< 5.17.9
Published
Jun 05, 2022
Tracked Since
Feb 18, 2026