CVE-2026-80993
net: phylink: correctly validate returned PCS in phylink_inband_caps
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
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Affected Versions
Linux / Linux
df874f9e52c340cc6f0a0014a97b778f67d46849 < b6b533f83461c3730875cf3ed5ff6362dcb67be9 df874f9e52c340cc6f0a0014a97b778f67d46849 < fb4d77553841ae85bed9b2cf03351c401e871d85 df874f9e52c340cc6f0a0014a97b778f67d46849 < f2849b1fd059ec9b3281b771e6ac5aad9feee851
Linux / Linux
6.14