5.5

CVE-2026-23020: net: 3com: 3c59x: fix possible null dereference in vortex_probe1()

Analyzed
AliasesUBUNTU-CVE-2026-23020DEBIAN-CVE-2026-23020
Published 31-01-2026Last modified 23-05-2026

Vulnerability summary

CVE-2026-23020 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.1% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.14%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 31 · Related 25
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098

Timeline

  1. 31-01-2026
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.14%

Chance of exploitation in the next 30 days

Percentile

3%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.13% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu155 products
  • linuxAll versions (No fix recorded) | < 5.15.0-173.183 | < 6.8.0-117.117
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1103.110 | < 6.8.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < 053ac9e37eee435e999277c0f1ef890dad6064bf | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < 6cff14b831dbdb32675b4c7904dcc3eeeaf47e9d | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < 606872c8e8bf96066730f6a2317502c5633c37f1 | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < 28b2a805609699be7b90020ae7dccfb234be1ceb | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < 2f05f7737e16d9a40038cc1c38a96a3f7964898b | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < d82796a57cc0dac1dbef19d913c8f02a8cc7b1a7 | ≥ 55c82617c3e82210b7471e9334e8fc5df6a9961f, < a4e305ed60f7c41bbf9aabc16dd75267194e0de3 | d30fdc02c49ad9965bba25015ae66c22dae967d1 | ≥ 4.16.12, < 4.17 | 4.17
  • linux_kernel≥ 4.16.12, < 4.17 | ≥ 4.17.1, < 5.10.248 | ≥ 5.11, < 5.15.198 | ≥ 5.16, < 6.1.161 | ≥ 6.2, < 6.6.121 | ≥ 6.7, < 6.12.66 | ≥ 6.13, < 6.18.6 | 4.17 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6 | 6.19:rc7 | 6.19:rc8
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

3 vendors · 158 products

References

37 links
Show all 37 references