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CVE-2021-33198 is an uncontrolled memory-consumption vulnerability in Go's math/big.Rat rational-number parser. In Go releases before 1.15.13 and 1.16.x releases before 1.16.5, math/big.Rat.SetString and math/big.Rat.UnmarshalText can process numeric inputs containing extremely large exponents in a manner that attempts excessive memory allocation. The resulting condition can panic the application or cause an unrecoverable fatal error.
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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.
29 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by the CIQ LTS 8.6 fuse-overlayfs security-update advisory.
A denial-of-service-style flaw in Go's math/big.Rat component: inputs containing very large exponents can cause a panic or unrecoverable fatal error. It affects installed Golang-related packages on Rocky Linux 8 covered by CIQ advisory crlsa-2021_4156.
A denial-of-service flaw in Go's math/big.Rat implementation where inputs with very large exponents can trigger a panic or unrecoverable fatal error.
A Go math/big.Rat denial-of-service condition triggered by extremely large exponent inputs.
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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.