CVE-2026-80993: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: df874f9e52c340cc6f0a0014a97b778f67d46849 преди b6b533f83461c3730875cf3ed5ff6362dcb67be9; df874f9e52c340cc6f0a0014a97b778f67d46849 преди fb4d77553841ae85bed9b2cf03351c401e871d85; df874f9e52c340cc6f0a0014a97b778f67d46849 преди f2849b1fd059ec9b3281b771e6ac5aad9feee851
• Linux Linux: 6.14; преди 6.14; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-80993
• https://nvd.nist.gov/vuln/detail/CVE-2026-80993
• https://git.kernel.org/stable/c/b6b533f83461c3730875cf3ed5ff6362dcb67be9
• https://git.kernel.org/stable/c/fb4d77553841ae85bed9b2cf03351c401e871d85
• https://git.kernel.org/stable/c/f2849b1fd059ec9b3281b771e6ac5aad9feee851