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CVE-2023-52933 is an integer-overflow vulnerability in the Linux kernel Squashfs extended-attribute table handling. A corrupted filesystem can supply an oversized xattr_ids count that becomes negative when stored in a signed variable. On 64-bit systems, sign extension during SQUASHFS_XATTR_* macro calculations yields an oversized unsigned value; on 32-bit systems, multiplication and subsequent rounding overflow. In both cases, the xattr index-table length can be calculated as zero. When paired with a corrupted xattr_table_start value, this zero length can incorrectly satisfy the table-size sanity check.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the referenced Alma Linux security update; technical flaw details are not provided.
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.
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.