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CVE-2023-53680 is an out-of-bounds array-access vulnerability in the Linux kernel NFS server daemon (NFSD) NFSv4 COMPOUND request decoding path. The nfsd4_decode_compound() function can pass OP_ILLEGAL, operation number 10044, to OPDESC(). OPDESC() indexes the nfsd4_ops[] operation-descriptor table directly and does not range-check its operation-number argument. Because OP_ILLEGAL is beyond the bounds of that table, this produces an out-of-bounds access.
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What an attacker gets, and what they’ve been doing with it.
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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.
A Linux kernel NFSD vulnerability involving OPDESC() being called with ops->opnum equal to OP_ILLEGAL.
A Linux kernel NFSD vulnerability involving improper handling of illegal operation numbers in OPDESC().
A Linux kernel NFSD vulnerability involving an invalid OPDESC() call when ops->opnum equals OP_ILLEGAL.
A Linux kernel NFSD vulnerability involving unsafe OPDESC() invocation when opnum is OP_ILLEGAL.
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.