CVE-2022-32296

LOWNVD 3.33.3—

3.3

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.

CVSS v3: 3.3
EG Score: 3.3(medium)
EPSS: 20.4%
KEV: Not listed

Published

June 5, 2022

Last Modified

November 21, 2024

References (12)

cve@mitrehttps://arxiv.org/abs/2209.12993
cve@mitrehttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
cve@mitrehttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
cve@mitrehttps://github.com/0xkol/rfc6056-device-tracker
cve@mitrehttps://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
cve@mitrehttps://www.debian.org/security/2022/dsa-5173
af854a3a-2127-422b-91ae-364da2661108https://arxiv.org/abs/2209.12993
af854a3a-2127-422b-91ae-364da2661108https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.9
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4c2c8f03a5ab7cb04ec64724d7d176d00bcc91e5
af854a3a-2127-422b-91ae-364da2661108https://github.com/0xkol/rfc6056-device-tracker
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5173

Vendor Advisories for CVE-2022-32296(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

RHSA-2026:4128
Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat AI Inference Server Model Optimization Tools 3.2.2 (CUDA)

Patch Availability(16)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-tools-5.15.0-1015-intel-iotg (5.15.0-1015.20) @ jammy	2026-05-25	ubuntu
ubuntu	linux-headers-gke-5.4 (5.4.0.1083.91) @ focal	2026-05-25	ubuntu
ubuntu	linux-signed-image-azure (4.15.0.1153.140) @ xenial	2026-05-25	ubuntu
ubuntu	linux-tools-virtual-hwe-16.04 (4.15.0.194.181) @ xenial	2026-05-25	ubuntu
ubuntu	linux-aws-headers-4.15.0-1142 (4.15.0-1142.154~16.04.1) @ xenial	2026-05-25	ubuntu
ubuntu	linux-image-azure-lts-18.04 (4.15.0.1153.123) @ bionic	2026-05-25	ubuntu
ubuntu	linux-headers-azure-fde (5.4.0.1091.96+cvm1.31) @ focal	2026-05-25	ubuntu
ubuntu	linux-signed-image-lowlatency-hwe-16.04-edge (4.15.0.194.179) @ bionic	2026-05-25	ubuntu
ubuntu	linux-image-virtual-hwe-18.04-edge (5.4.0.126.127) @ focal	2026-05-25	ubuntu
ubuntu	linux-gcp-lts-20.04 (5.4.0.1089.94) @ focal	2026-05-25	ubuntu
ubuntu	linux-headers-lowlatency-64k-hwe-20.04-edge (5.15.0.48.54~20.04.16) @ focal	2026-05-25	ubuntu
ubuntu	linux-image-gcp-edge (5.4.0.1089.68) @ bionic	2026-05-25	ubuntu
ubuntu	linux-image-5.4.0-1070-raspi (5.4.0-1070.80~18.04.1) @ bionic	2026-05-25	ubuntu
ubuntu	linux-image-unsigned-4.15.0-1142-aws (4.15.0-1142.154) @ bionic	2026-05-25	ubuntu
ubuntu	linux-gcp (4.15.0.1137.131) @ xenial	2026-05-25	ubuntu
redhat	rhaiis/model-opt-cuda-rhel9:sha256:2fd4f343235f7e896a70169fc4b856343d639c65bec77c1883cbd8210caf3a92	2026-03-09	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(16)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 11× in last 7d / 11× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 21:06 UTCEG score recompute
2026-05-25 21:06 UTCVendor advisory
2026-05-25 21:06 UTCGHSA enrichment
2026-05-25 14:46 UTCOSV refresh
2026-05-24 16:51 UTCepss_batch

Frequently asked(5)

What is CVE-2022-32296?

CVE-2022-32296 is a low vulnerability published on June 5, 2022. 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.

When was CVE-2022-32296 disclosed?

CVE-2022-32296 was first published in the National Vulnerability Database on June 5, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-32296 actively exploited?

CVE-2022-32296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-32296?

CVE-2022-32296 has a CVSS v3 base score of 3.3 (NVD).

How do I remediate CVE-2022-32296?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-32296, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2022-32296

Published

Last Modified

References (12)

Vendor Advisories for CVE-2022-32296(1)

Patch Availability(16)

Weakness Classification(2)

Additional Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-32296?

Same vendor

Same CWE

CVE-2022-32296

📅 Published

🔄 Last Modified

🔗 References (12)

📣 Vendor Advisories for CVE-2022-32296(1)

Patch Availability(16)

Weakness Classification(2)

Additional Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-32296?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

References (12)

Vendor Advisories for CVE-2022-32296(1)

Frequently asked(5)

Related CVEs(same vendor + same CWE)