CVE-2026-23020

MEDIUMNVD 5.55.5—Trending — 4 sources updated this week

5.5

In the Linux kernel, the following vulnerability has been resolved:

net: 3com: 3c59x: fix possible null dereference in vortex_probe1()

pdev can be null and free_ring: can be called in 1297 with a null pdev.

CVSS v3: 5.5
EG Score: 5.5(medium)
EPSS: 6.6%
KEV: Not listed

Published

January 31, 2026

Last Modified

March 25, 2026

References (7)

416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/053ac9e37eee435e999277c0f1ef890dad6064bf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/28b2a805609699be7b90020ae7dccfb234be1ceb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2f05f7737e16d9a40038cc1c38a96a3f7964898b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/606872c8e8bf96066730f6a2317502c5633c37f1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6cff14b831dbdb32675b4c7904dcc3eeeaf47e9d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a4e305ed60f7c41bbf9aabc16dd75267194e0de3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d82796a57cc0dac1dbef19d913c8f02a8cc7b1a7

Patch Availability(17)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	linux-xilinx-zynqmp-tools-5.15.0-1067 (5.15.0-1067.71) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-gcp-fips-5.15 (5.15.0.1103.93) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-nvidia-tegra-igx-rt-5.15 (5.15.0.1044.46) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-realtime-5.15 (5.15.0.1102.106) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-intel-iot-realtime-5.15 (5.15.0.1094.98) @ jammy	2026-06-07	ubuntu
ubuntu	linux-virtual-hwe-20.04-edge (5.15.0.173.183~20.04.1) @ focal	2026-06-07	ubuntu
ubuntu	linux-tools-raspi-nolpae (5.15.0.1097.95) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-azure-lts-22.04 (5.15.0.1109.107) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-azure-fips-5.15 (5.15.0.1109.94) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-azure-edge (5.15.0.1110.119~20.04.1) @ focal	2026-06-07	ubuntu
ubuntu	linux-virtual-6.8 (6.8.0-117.117) @ noble	2026-06-07	ubuntu
ubuntu	linux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1054.57.1) @ noble	2026-06-07	ubuntu
ubuntu	linux-tools-fips-6.8 (6.8.0-116.116+fips1) @ noble	2026-06-07	ubuntu
ubuntu	linux-tools-nvidia-tegra-rt-6.8 (6.8.0-1024.24) @ noble	2026-06-07	ubuntu
ubuntu	linux-tools-nvidia-hwe-22.04-edge (6.8.0-1054.57~22.04.1) @ jammy	2026-06-07	ubuntu
ubuntu	linux-tools-azure-lts-24.04 (6.8.0-1056.62) @ noble	2026-06-07	ubuntu
ubuntu	linux-tools-azure-fips-6.8 (6.8.0-1059.65+fips1) @ noble	2026-06-07	ubuntu

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(1)

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

CWE-476NULL Pointer Dereference

All Vendor Advisories

(17)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 18× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:17 UTCEPSS rescore
2026-06-08 14:17 UTCEPSS rescore
2026-06-07 23:11 UTCEG score recompute
2026-06-07 23:11 UTCVendor advisory
2026-06-07 23:11 UTCGHSA enrichment
2026-06-07 15:25 UTCEPSS rescore
2026-06-07 15:24 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-06 13:47 UTCEPSS rescore
2026-06-05 22:47 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-05 06:10 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-04 13:12 UTCEPSS rescore
2026-06-02 20:13 UTCEPSS rescore
2026-06-02 20:13 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-23020?

CVE-2026-23020 is a medium vulnerability published on January 31, 2026. In the Linux kernel, the following vulnerability has been resolved: net: 3com: 3c59x: fix possible null dereference in vortex_probe1() pdev can be null and free_ring: can be called in 1297 with a null pdev.

When was CVE-2026-23020 disclosed?

CVE-2026-23020 was first published in the National Vulnerability Database on January 31, 2026, with the most recent update on March 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-23020 actively exploited?

CVE-2026-23020 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-23020?

CVE-2026-23020 has a CVSS v3 base score of 5.5 (NVD).

How do I remediate CVE-2026-23020?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-23020, 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-2026-23020

Published

Last Modified

References (7)

Patch Availability(17)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23020?

Same vendor

Same CWE

CVE-2026-23020

📅 Published

🔄 Last Modified

🔗 References (7)

Patch Availability(17)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-23020?

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References (7)

Frequently asked(5)

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