CVE-2026-23084

MediumCVSS 5.5/10Last modified Nov 10, 2026

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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

Affected software

VendorProductVersions
LinuxLinux>= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 4cba480c9b9a3861a515262225cb53a1f5978344; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 92c6dc181a18e6e0ddb872ed35cb48a9274829e4; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 6c3e00888dbec887125a08b51a705b9b163fcdd1; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < e206fb415db36bad52bb90c08d46ce71ffbe8a80; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 47ffb4dcffe336f4a7bd0f3284be7aadc6484698; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 31410a01a86bcb98c798d01061abf1f789c4f75a; >= 95046b927a54f461766f83a212c6a93bc5fd2e67, < 8215794403d264739cc676668087512950b2ff31
LinuxLinux3.12
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)>= V3.1.7, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)>= V3.1.6, < *
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)>= V3.1.7, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)>= V3.1.6, < *
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)>= V3.1.7, < *

References

Timeline

Published
Feb 4, 2026
Last modified
Nov 10, 2026
NVD status
Modified

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CVE-2026-23084: Medium severity, CVSS 5.5 | Vulnix