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CVE-2026-43006 is an out-of-bounds read vulnerability in Linux kernel io_uring resource handling. validate_fixed_range() accepts a zero-length operation whose buffer address is exactly at the end of a registered region because its bounds check uses a strict greater-than comparison. io_import_fixed() subsequently computes an offset equal to the registered region's length, causing its bio_vec traversal to advance beyond the last entry and read bv_offset from out-of-bounds slab memory. The demonstrated trigger reaches the vulnerable import through io_write_fixed().
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3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel io_uring resource-management vulnerability involving zero-length fixed-buffer imports. The fix rejects such imports, and the advisory recommends updating affected Rocky Linux 10.2 kernel packages.
A Linux kernel io_uring resource-management vulnerability involving acceptance of zero-length fixed buffer imports.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.