CVE-2026-80993

In the Linux kernel, the following vulnerability has been resolved: net: phylink: correctly validate returned PCS in phylink_inband_caps In phylink_inband_caps(), the PCS returned by mac_select_pcs is only checked if NULL but mac_select_pcs can also return an error pointer. This can cause a kernel panic as phylink_pcs_inband_caps() only checks if passed PCS is not NULL and directly dereference ops from the phylink_pcs struct. Use the IS_ERR_OR_NULL macro to address both case where the returned PCS can be NULL or an error pointer and prevent a kernel panic.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/b6b533f83461c3730875cf3ed5ff6362dcb67be9
https://git.kernel.org/stable/c/f2849b1fd059ec9b3281b771e6ac5aad9feee851
https://git.kernel.org/stable/c/fb4d77553841ae85bed9b2cf03351c401e871d85

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-11 20:19

NVD link : CVE-2026-80993

Mitre link : CVE-2026-80993

CVE.ORG link : CVE-2026-80993

JSON object : View

Products Affected

No product.

CWE

No CWE.

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