In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iommu\/amd: Do not reallocate GA log buffers on resume<\/p>\n
Commit c5e1a1eb9279 (“iommu\/amd: Simplify and Consolidate Virtual APIC
\n(AVIC) Enablement”) moved the GA log allocation from iommu_init_pci()
\nto enable_iommus_vapic(), which is called on every resume.<\/p>\n
iommu_init_ga_log() assigns iommu->ga_log and iommu->ga_log_tail
\nunconditionally. Each resume therefore replaces the boot-time pointers
\nand leaks both old allocations. The function also uses GFP_KERNEL from a
\nsyscore resume callback, where interrupts are disabled and the non-boot
\nCPUs are offline.<\/p>\n
Return early if both buffers are already allocated. Clear the pointers
\nin free_ga_log() so a partial allocation failure cannot leave ga_log
\ndangling.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the Linux kernel, the following vulnerability has been resolved:<\/p>\n
iommu\/amd: Do not reallocate GA log buffers on resume<\/p>\n
Commit c5e1a1eb9279 (“iommu\/amd: Simplify and Consolidate Virtual APIC
\n(AVIC<\/p>\n","protected":false},"template":"","meta":[],"categories":[],"tags":[],"class_list":["post-29158","vuln","type-vuln","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.54iter.cn\/index.php?rest_route=\/wp\/v2\/vuln\/29158","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=29158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.54iter.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}