5.5

CVE-2026-23084: linux NULL Pointer Dereference

CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2026-23084DEBIAN-CVE-2026-23084
Published 04-02-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-23084 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.5% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.15%
0%100%
Low · +0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 45 · Related 39
DLA-4475-1DLA-4476-1DSA-6126-1DSA-6127-1MGASA-2026-0097MGASA-2026-0098

Timeline

  1. 04-02-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: be2net: Fix NULL pointer dereference in be_cmd_get_mac_from_list When the parameter pmac_id_valid argument of be_cmd_get_mac_from_list() is set to false, the driver may request the PMAC_ID from the firmware of the network card, and this function will store that PMAC_ID at the provided address pmac_id. This is the contract of this function. However, there is a location within the driver where both pmac_id_valid == false and pmac_id == NULL are being passed. This could result in dereferencing a NULL pointer. To resolve this issue, it is necessary to pass the address of a stub variable to the function.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

+0.02 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu156 products
  • linuxAll versions (No fix recorded) | < 5.15.0-176.186 | < 6.8.0-117.117
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1105.112 | < 6.8.0-1055.58
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 4cba480c9b9a3861a515262225cb53a1f5978344 | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 92c6dc181a18e6e0ddb872ed35cb48a9274829e4 | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 6c3e00888dbec887125a08b51a705b9b163fcdd1 | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < e206fb415db36bad52bb90c08d46ce71ffbe8a80 | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 47ffb4dcffe336f4a7bd0f3284be7aadc6484698 | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 31410a01a86bcb98c798d01061abf1f789c4f75a | ≥ 95046b927a54f461766f83a212c6a93bc5fd2e67, < 8215794403d264739cc676668087512950b2ff31 | 3.12
  • linux_kernel≥ 3.12, < 5.10.249 | ≥ 5.11, < 5.15.199 | ≥ 5.16, < 6.1.162 | ≥ 6.2, < 6.6.122 | ≥ 6.7, < 6.12.68 | ≥ 6.13, < 6.18.8 | 6.19:rc1 | 6.19:rc2 | 6.19:rc3 | 6.19:rc4 | 6.19:rc5 | 6.19:rc6
Debian1 product
  • linux< 6.1.162-1 | < 6.12.69-1 | < 6.18.8-1

3 vendors · 159 products

References

42 links
Show all 42 references