Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= df874f9e52c340cc6f0a0014a97b778f67d46849, < b6b533f83461c3730875cf3ed5ff6362dcb67be9; >= df874f9e52c340cc6f0a0014a97b778f67d46849, < fb4d77553841ae85bed9b2cf03351c401e871d85; >= df874f9e52c340cc6f0a0014a97b778f67d46849, < f2849b1fd059ec9b3281b771e6ac5aad9feee851 |
| Linux | Linux | 6.14 |
References
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received