{"id":21326,"date":"2026-09-12T04:31:02","date_gmt":"2026-09-11T20:31:02","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80993"},"modified":"2026-09-12T04:31:02","modified_gmt":"2026-09-11T20:31:02","slug":"cve-2026-80993","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-80993","title":{"rendered":"CVE-2026-80993 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnet: phylink: correct"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: phylink: correctly validate returned PCS in phylink_inband_caps<\/p>\n<p>In phylink_inband_caps(), the PCS returned by mac_select_pcs is only<br \/>\nchecked if NULL but mac_select_pcs can also return an error pointer.<\/p>\n<p>This can cause a kernel panic as phylink_pcs_inband_caps() only checks<br \/>\nif passed PCS is not NULL and directly dereference ops from the phylink_pcs<br \/>\nstruct.<\/p>\n<p>Use the IS_ERR_OR_NULL macro to address both case where the returned<br \/>\nPCS can be NULL or an error pointer and prevent a kernel panic.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: phylink: correctly validate returned PCS in phylink_inband_caps<\/p>\n<p>In phylink_inband_caps(), the PCS returned by mac_select_pcs <\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21326","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21326","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln"}],"about":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/types\/vuln"}],"wp:attachment":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=21326"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21326"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21326"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}