vulnerability
Red Hat: CVE-2021-42716: stb: heap-based buffer overflow in stb_image PNM loader
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:N/A:P) | Oct 21, 2021 | Jul 9, 2025 | Jul 9, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:P)
Published
Oct 21, 2021
Added
Jul 9, 2025
Modified
Jul 9, 2025
Description
An issue was discovered in stb stb_image.h 2.27. The PNM loader incorrectly interpreted 16-bit PGM files as 8-bit when converting to RGBA, leading to a buffer overflow when later reinterpreting the result as a 16-bit buffer. An attacker could potentially have crashed a service using stb_image, or read up to 1024 bytes of non-consecutive heap data without control over the read location.
Solution
no-fix-redhat-rpm-package
References
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