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CVE-2024-26772 is a race condition in the Linux kernel ext4 multiblock allocator. In ext4_mb_find_by_goal(), validation of whether a block group's block bitmap was marked corrupt was not protected by the group lock. Concurrent state changes could therefore permit the allocator to select blocks from a block group whose bitmap was corrupt. The fix moves the corrupted-bitmap check under the group lock, ensuring allocation decisions are synchronized with the group's corruption state.
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Improper handling of corrupted block groups in the Linux ext4 allocator.
A Linux kernel ext4 filesystem flaw involving allocation of blocks from a corrupted group in ext4_mb_find_by_goal().
A Linux kernel ext4 filesystem flaw involving allocation of blocks from a corrupted group.
Linux kernel ext4 flaw involving allocation of blocks from a corrupted group in ext4_mb_find_by_goal().
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.