In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
PCI: plda: Fix use-after-free of event IRQs during teardown<\/p>\n
plda_pcie_irq_domain_deinit() removes pcie->event_domain via
\nirq_domain_remove(), but the per-event IRQs mapped from that domain
\nare requested with devm_request_irq() in plda_init_interrupts(). The
\nactual free_irq() for a devm-managed IRQ is deferred by devres until
\nafter the calling probe()\/remove() function returns.<\/p>\n
This means irq_domain_remove() can free the domain’s internal data
\nbefore the deferred free_irq() for IRQs still mapped into it has run.
\nWhen devres later processes that deferred cleanup, it can end up
\ndereferencing the already-freed domain.<\/p>\n
Free each event IRQ explicitly with devm_free_irq() before removing
\nthe domain. This triggers the free immediately and removes the IRQ
\nfrom the devres tracking list, so devres will not attempt to free it
\na second time later.<\/p>\n
Also dispose of the event, INTx, and MSI IRQ mappings with
\nirq_dispose_mapping() before their owning domains are removed.<\/p>\n
Finally, guard the calls to irq_set_chained_handler_and_data() for
\npcie->irq, pcie->msi_irq, and pcie->intx_irq so they only run when
\nthose fields hold a valid (>0) IRQ number.<\/p>\n
This is a pre-existing issue, flagged by automated review during work
\non an earlier, unrelated patch to this driver.<\/p>\n
Build-tested and boot-tested on StarFive VisionFive v1.2A board<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
PCI: plda: Fix use-after-free of event IRQs during teardown<\/p>\n
plda_pcie_irq_domain_deinit() removes pcie->event_domain via
\nirq_domai<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-21377","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/21377","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=21377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=21377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=21377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}