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CVE-2022-48743 is a buffer underflow flaw in the Linux kernel AMD XGBE Ethernet driver. Inconsistent hardware descriptor information can cause an socket-buffer data-length underflow during receive processing. The invalid length reaches a kernel assertion and triggers a BUG condition, producing an intermittent kernel panic. The upstream correction detects the underflow and drops the affected packet instead of continuing processing.
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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.
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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.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Data-length underflow in Linux kernel AMD XGBE network driver.
Data-length underflow vulnerability in the Linux kernel AMD XGBE network driver.
Linux kernel AMD XGBE network-driver packet data-length underflow.
Linux kernel AMD XGBE network-driver vulnerability involving an skb data-length underflow.
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.