cve-2024-27022
Vulnerability from cvelistv5
Published
2024-05-01 05:35
Modified
2024-11-05 09:20
Severity ?
Summary
fork: defer linking file vma until vma is fully initialized
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/04b0c41912349aff11a1bbaef6a722bd7fbb90ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c42f7e039aba3de6d7dbf92da708e2b2ecba557Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/35e351780fa9d8240dd6f7e4f245f9ea37e96c19Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abdb88dd272bbeb93efe01d8e0b7b17e24af3a34Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cec11fa2eb512ebe3a459c185f4aca1d44059bbfPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dd782da470761077f4d1120e191f1a35787cda6e
Impacted products
LinuxLinux
LinuxLinux
Show details on NVD website

To clipboard 

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And the root cause is below race:\\n\\n CPU 1\\t\\t\\t\\t\\tCPU 2\\n fork\\t\\t\\t\\t\\thugetlbfs_fallocate\\n  dup_mmap\\t\\t\\t\\t hugetlbfs_punch_hole\\n   i_mmap_lock_write(mapping);\\n   vma_interval_tree_insert_after -- Child vma is visible through i_mmap tree.\\n   i_mmap_unlock_write(mapping);\\n   hugetlb_dup_vma_private -- Clear vma_lock outside i_mmap_rwsem!\\n\\t\\t\\t\\t\\t i_mmap_lock_write(mapping);\\n   \\t\\t\\t\\t\\t hugetlb_vmdelete_list\\n\\t\\t\\t\\t\\t  vma_interval_tree_foreach\\n\\t\\t\\t\\t\\t   hugetlb_vma_trylock_write -- Vma_lock is cleared.\\n   tmp-\u003evm_ops-\u003eopen -- Alloc new vma_lock outside i_mmap_rwsem!\\n\\t\\t\\t\\t\\t   hugetlb_vma_unlock_write -- Vma_lock is assigned!!!\\n\\t\\t\\t\\t\\t i_mmap_unlock_write(mapping);\\n\\nhugetlb_dup_vma_private() and hugetlb_vm_op_open() are called outside\\ni_mmap_rwsem lock while vma lock can be used in the same time.  Fix this\\nby deferring linking file vma until vma is fully initialized.  Those vmas\\nshould be initialized first before they can be used.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: fork: posponga la vinculaci\u00f3n del archivo vma hasta que vma est\u00e9 completamente inicializado. Thorvald inform\u00f3 una ADVERTENCIA [1]. 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}


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