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CVE-2025-71072 affects failure recovery during Linux kernel shmem filesystem rename operations. Under severe memory pressure, maple_tree insertions can fail, and simple_offset_rename() and simple_offset_rename_exchange() do not correctly recover from these failures. Additionally, shmem_rename2() can encounter a failure after a successful shmem_whiteout(), violating the requirement that execution proceed to d_move(). These conditions can leave rename and whiteout handling inconsistent. The fix preinserts the target directory offset in shmem_rename2() and reorders rename-exchange operations so subsequent updates cannot fail because of allocation errors.
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A Linux kernel shared-memory filesystem vulnerability involving improper recovery from rename failures under severe memory pressure. The fix reorders operations and preinserts the target so that subsequent operations cannot fail after a successful shmem_whiteout(). The advisory rates it CVSS v3 5.5, with local access, low privileges, and high availability impact.
A Linux kernel shmem vulnerability addressed in this Red Hat kernel security advisory.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.