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CVE-2023-52580 is an incorrect size calculation in the Linux kernel net/core flow dissector while parsing Ethernet PTP frames identified by ETH_P_1588. A crafted raw PTP Ethernet frame larger than 256 bytes, with trailing 0xff data, can cause the dissector to treat the PTP message-length field as an invalid large value. The resulting offset calculation overflows a 16-bit value, corrupting flow-dissection state and causing malformed PTP-header processing. The upstream correction bases the offset advance on the fixed size of the PTP header rather than the attacker-controlled message-length value.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Linux kernel flow-dissector flaw that can crash the kernel.
Linux kernel denial-of-service flaw causing a crash in the ETH_P_1588 flow dissector.
Linux kernel ETH_P_1588 flow-dissector crash vulnerability.
Linux kernel networking flaw that can crash the kernel through ETH_P_1588 flow dissection.
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.