Vulnerability in Linux Kernel
CVE-2022-32296
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9 (Release Notes, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2022/07/msg00000.html (mailing-list)
- www.debian.org/security/2022/dsa-5173 (vendor-advisory)
- arxiv.org/abs/2209.12993
- github.com/0xkol/rfc6056-device-tracker
Frequently asked questions
- What is CVE-2022-32296?
- CVE-2022-32296 is a low-severity vulnerability in Linux Kernel, classified under Use of Insufficiently Random Values. CVSS score: 3.3/10. Published 2022-06-05.
- How severe is CVE-2022-32296?
- Low severity. CVSS v3 base score is 3.3 out of 10.
- Is CVE-2022-32296 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.