CVE-2026-80993Medium· 5.5▾ SunlitIn 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_selec…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 4.1
none → medium
— → 4.1
none → medium
— → 5.5
none → medium
0.2% → 0.2%
Last analysed / modified upstream
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.
Linux >= df874f9e52c340cc6f0a0014a97b778f67d46849 < b6b533f83461c3730875cf3ed5ff6362dcb67be9Linux >= df874f9e52c340cc6f0a0014a97b778f67d46849 < fb4d77553841ae85bed9b2cf03351c401e871d85Linux >= df874f9e52c340cc6f0a0014a97b778f67d46849 < f2849b1fd059ec9b3281b771e6ac5aad9feee851Linux 6.14Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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