{"id":65229,"date":"2025-06-28T12:32:10","date_gmt":"2025-06-28T09:02:10","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2025-38086-netchip-ch9200-uninitialized-memory-access-vulnerability\/"},"modified":"2025-06-28T12:32:10","modified_gmt":"2025-06-28T09:02:10","slug":"cve-2025-38086-netchip-ch9200-uninitialized-memory-access-vulnerability","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2025-38086-netchip-ch9200-uninitialized-memory-access-vulnerability\/","title":{"rendered":"CVE-2025-38086 &#8211; &#8220;NetChip Ch9200 Uninitialized Memory Access Vulnerability&#8221;"},"content":{"rendered":"<p><strong>CVE ID : <\/strong>CVE-2025-38086<br \/>\n<br \/>\n<strong>Published : <\/strong> June 28, 2025, 8:15 a.m. | 44\u00a0minutes ago<br \/>\n<br \/>\n<strong>Description : <\/strong>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: ch9200: fix uninitialised access during mii_nway_restart<\/p>\n<p>In mii_nway_restart() the code attempts to call<br \/>\nmii-&gt;mdio_read which is ch9200_mdio_read(). ch9200_mdio_read()<br \/>\nutilises a local buffer called &#8220;buff&#8221;, which is initialised<br \/>\nwith control_read(). However &#8220;buff&#8221; is conditionally<br \/>\ninitialised inside control_read():<\/p>\n<p>        if (err == size) {<br \/>\n                memcpy(data, buf, size);<br \/>\n        }<\/p>\n<p>If the condition of &#8220;err == size&#8221; is not met, then<br \/>\n&#8220;buff&#8221; remains uninitialised. Once this happens the<br \/>\nuninitialised &#8220;buff&#8221; is accessed and returned during<br \/>\nch9200_mdio_read():<\/p>\n<p>        return (buff[0] | buff[1]\n<strong>Severity:<\/strong> 0.0 | NA<br \/>\n<br \/>\nVisit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID : CVE-2025-38086 Published : June 28, 2025, 8:15 a.m. | 44\u00a0minutes ago Description : In the Linux kernel, the following vulnerability has been resolved: net: ch9200: fix uninitialised access during mii_nway_restart In mii_nway_restart() the code attempts to call mii-&gt;mdio_read which is ch9200_mdio_read(). ch9200_mdio_read() utilises a local buffer called &#8220;buff&#8221;, which is initialised with &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-65229","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/65229","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/comments?post=65229"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/65229\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=65229"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=65229"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=65229"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}