{"id":41036,"date":"2026-10-19T00:31:53","date_gmt":"2026-10-18T16:31:53","guid":{"rendered":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98564"},"modified":"2026-10-19T00:31:53","modified_gmt":"2026-10-18T16:31:53","slug":"cve-2026-98564","status":"publish","type":"vuln","link":"https:\/\/www.54iter.cn\/?vuln=cve-2026-98564","title":{"rendered":"CVE-2026-98564 &#8211; In the Linux kernel, the following vulnerability has been resolved:\n\nnet: dsa: mt7530: lea"},"content":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: dsa: mt7530: leave the MDIO IRQ mappings to regmap-irq<\/p>\n<p>mt7530_remove_common() disposes the per-PHY interrupt mappings from<br \/>\n.remove, but the regmap-irq chip that owns the domain is devm-registered,<br \/>\nso its parent interrupt is only freed once .remove has returned. The<br \/>\nswitch&#8217;s own regmap-irq thread can therefore still dispatch on a mapping<br \/>\nthat is already gone: irq_find_mapping() returns 0, irq_to_desc() returns<br \/>\nNULL and handle_nested_irq() locks desc-&gt;lock without checking it. The<br \/>\nattached PHYs have not given those interrupts back yet either, which the<br \/>\nkernel warns about a moment before the fault.<\/p>\n<p>regmap_del_irq_chip() disposes the same mappings itself, after freeing the<br \/>\nparent interrupt and before removing the domain, so there is nothing left<br \/>\nfor the driver to do here. Until it runs the descriptors stay alive, and a<br \/>\nlate dispatch on one of them is harmless: dsa_unregister_switch() has freed<br \/>\nthe PHY handlers by then, so handle_nested_irq() finds no action and<br \/>\nreturns.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In the Linux kernel, the following vulnerability has been resolved:<\/p>\n<p>net: dsa: mt7530: leave the MDIO IRQ mappings to regmap-irq<\/p>\n<p>mt7530_remove_common() disposes the per-PHY interrupt mappings from<br \/>\n.r<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-41036","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/41036","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=41036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}