Threats Tagged 'ghsa-ccm4-344c-hjv9'
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Threats Tagged 'ghsa-ccm4-344c-hjv9'
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In the Linux kernel, the following vulnerability has been resolved: mm/util: don't read __page_2 for order-1 folios in snapshot_page()… (CVE-2026-80685)CVE-2026-80685 0 In the Linux kernel, the following vulnerability has been resolved: mm/util: don't read __page_2 for order-1 folios in snapshot_page() snapshot_page() currently reads __page_2 after checking nr_pages > 1, but it should only do so when nr_pages > 2. If an order-1 folio is allocated at the end of a vmemmap section, __page_2 will not exist and reading it will cause a fault. During DLPAR memory remove on a 22 TB ppc64le LPAR, snapshot_page() oopsed on the page isolation path while reading an order-1 folio's __page_2 from an adjacent absent section (unmapped vmemmap). Fix this to avoid reading memmap that doesn't exist (e.g., a vmemmap hole). Join the discussion | GCVE Database | 08/28/2026, 09:31:49 UTC Added: 08/28/2026, 15:22:43 UTC |
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