Threats Tagged 'cve-2026-64149'
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Threats Tagged 'cve-2026-64149'
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In the Linux kernel, the following vulnerability has been resolved: dma-mapping: move dma_map_resource() sanity check into debug code… (CVE-2026-64149)CVE-2026-64149 0 A vulnerability in the Linux kernel's dma_map_resource() function was addressed by moving a sanity check into debug code and improving the validation logic. The original check used pfn_valid() to detect if a memory range was RAM, but this was unreliable on ARM64 with SPARSEMEM, causing false positives for MMIO regions and resulting in warnings and mapping errors. The fix replaces the check with a combined pfn_valid() and !PageReserved() condition, correctly distinguishing usable RAM from MMIO regions and preventing false warnings without blocking mappings. Join the discussion | GCVE Database | 07/19/2026, 18:31:53 UTC Added: 07/19/2026, 19:38:16 UTC |
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