Threats Tagged 'ubuntu-cve-2026-46268'
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Threats Tagged 'ubuntu-cve-2026-46268'
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Linux hwe edge: In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Fix p2pmem_alloc_mmap() warning condition Commit b7e282378773 has… (CVE-2026-46268)CVE-2026-46268 0 In the Linux kernel, the following vulnerability has been resolved: PCI/P2PDMA: Fix p2pmem_alloc_mmap() warning condition Commit b7e282378773 has already changed the initial page refcount of p2pdma page from one to zero, however, in p2pmem_alloc_mmap() it uses "VM_WARN_ON_ONCE_PAGE(!page_ref_count(page))" to assert the initial page refcount should not be zero and the following will be reported when CONFIG_DEBUG_VM is enabled: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x380400000 flags: 0x20000000002000(reserved|node=0|zone=4) raw: 0020000000002000 ff1100015e3ab440 0000000000000000 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: VM_WARN_ON_ONCE_PAGE(!page_ref_count(page)) ------------[ cut here ]------------ WARNING: CPU: 5 PID: 449 at drivers/pci/p2pdma.c:240 p2pmem_alloc_mmap+0x83a/0xa60 Fix by using "page_ref_count(page)" as the assertion condition. Join the discussion | GCVE Database | 06/03/2026, 18:16:00 UTC Added: 07/31/2026, 15:37:42 UTC |
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