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CVE-2023-52933 is an integer-overflow vulnerability in the Linux kernel Squashfs implementation's handling of the extended-attribute identifier count. A malformed Squashfs image can supply an xattr_ids value that is converted to a negative signed integer. On 64-bit systems, sign extension during xattr metadata-size macro calculations produces an oversized unsigned value; on 32-bit systems, multiplication and subsequent rounding overflow. In both cases, the calculated xattr index-table length can become zero. A malformed xattr table start value can then cause the zero-length result to incorrectly satisfy the filesystem's table-size sanity check. The fix uses unsigned handling for xattr_ids and explicitly widens the relevant calculation to u64.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel Squashfs issue involving handling and sanity checking of the xattr_ids count.
A Linux kernel Squashfs flaw in handling and sanity checking of the xattr_ids count.
A Linux kernel Squashfs flaw involving improper handling and sanity checking of the xattr_ids count.
A Linux kernel Squashfs vulnerability involving improper handling and sanity checking of the xattr_ids count.
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.