{"id":81210,"date":"2026-06-29T08:23:35","date_gmt":"2026-06-29T04:53:35","guid":{"rendered":"https:\/\/afaghhosting.net\/blog\/cve-2026-53325-agp-amd64-fix-broken-error-propagation-in-agp_amd64_probe\/"},"modified":"2026-06-29T08:23:35","modified_gmt":"2026-06-29T04:53:35","slug":"cve-2026-53325-agp-amd64-fix-broken-error-propagation-in-agp_amd64_probe","status":"publish","type":"post","link":"https:\/\/afaghhosting.net\/blog\/cve-2026-53325-agp-amd64-fix-broken-error-propagation-in-agp_amd64_probe\/","title":{"rendered":"CVE-2026-53325 &#8211; agp\/amd64: Fix broken error propagation in agp_amd64_probe()"},"content":{"rendered":"<p>CVE ID :CVE-2026-53325<\/p>\n<p>  Published : June 29, 2026, 4:53 a.m. | 52\u00a0minutes ago<\/p>\n<p>  Description :In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>agp\/amd64: Fix broken error propagation in agp_amd64_probe()<\/p>\n<p>A NULL pointer dereference was observed in the AMD64 AGP driver when<br \/>\nrunning in a virtualized environment (e.g. qemu\/kvm) without a physical<br \/>\nAMD northbridge. The crash occurs in amd64_fetch_size() when attempting<br \/>\nto dereference the pointer returned by node_to_amd_nb(0).<\/p>\n<p>The root cause of this crash is broken error propagation in<br \/>\nagp_amd64_probe(): When no AMD northbridges are found, cache_nbs()<br \/>\ncorrectly returns -ENODEV. However, the probe function erroneously<br \/>\nchecks the return value against exactly -1, rather than misc member.<\/p>\n<p>Fix the issue by correcting the error check in agp_amd64_probe() to<br \/>\nabort properly when cache_nbs() returns any negative error code. This<br \/>\nprevents the driver from erroneously proceeding without hardware, thereby<br \/>\navoiding the subsequent NULL pointer dereference at its source.<\/p>\n<p>  Severity: 0.0 | NA<\/p>\n<p>  Visit the link for more details, such as CVSS details, affected products, timeline, and more&#8230;\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>CVE ID :CVE-2026-53325 Published : June 29, 2026, 4:53 a.m. | 52\u00a0minutes ago Description :In the Linux kernel, the following vulnerability has been resolved: agp\/amd64: Fix broken error propagation in agp_amd64_probe() A NULL pointer dereference was observed in the AMD64 AGP driver when running in a virtualized environment (e.g. qemu\/kvm) without a physical AMD northbridge. &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-81210","post","type-post","status-publish","format-standard","hentry","category-vulnerability"],"_links":{"self":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81210","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=81210"}],"version-history":[{"count":0,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/posts\/81210\/revisions"}],"wp:attachment":[{"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/media?parent=81210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/categories?post=81210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afaghhosting.net\/blog\/wp-json\/wp\/v2\/tags?post=81210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}