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CVE-2021-3420

9.8 CRITICAL

A flaw was found in newlib in versions prior to 4.0.0

Published: 2021-03-05 · Last updated: 2026-06-17

Severity and scoring

CVSS
9.8 CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-190

Affected products

VendorProduct
fedoraprojectfedora, newlib
newlib_projectfedora, newlib

Description

A flaw was found in newlib in versions prior to 4.0.0. Improper overflow validation in the memory allocation functions mEMALIGn, pvALLOc, nano_memalign, nano_valloc, nano_pvalloc could case an integer overflow, leading to an allocation of a small buffer and then to a heap-based buffer overflow.

Source: NVD

References

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