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CVE-2023-53354 is a denial-of-service vulnerability in the Linux kernel skbuff subsystem's skb_segment() function. The vulnerable ordering invokes zero-copy processing after skb_segment() has read skb fragment references and the fragment count into local variables. skb_orphan_frags() may then alter the fragment count or replace fragment storage, leaving the local nrfrags value and fragment reference stale. Segmentation can consequently reach its fragment boundary prematurely, follow a NULL list_skb pointer, and trigger a kernel NULL-pointer dereference and panic. The corrective change invokes the zero-copy functions before skb_segment() accesses fragment data and nr_frags.
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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.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel skbuff segmentation flaw involving ordering of zero-copy operations and packet fragments.
Linux kernel skbuff segmentation flaw concerning the order of zero-copy functions and use of skbuff fragments.
Linux kernel skbuff segmentation flaw involving the ordering of zero-copy functions and skbuff-fragment use.
A Linux kernel skbuff segmentation flaw concerning ordering of zero-copy functions and skbuff fragment use.
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.