Always-Incorrect Control Flow Implementation The advisory has been revoked - it doesn't affect any version of package leptonlib (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-LEPTONLIB-1130851
- published16 Jan 2026
- disclosed11 Mar 2021
Introduced: 11 Mar 2021
CVE-2020-36277 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:16.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream leptonlib package and not the leptonlib package as distributed by Ubuntu.
Leptonica before 1.80.0 allows a denial of service (application crash) via an incorrect left shift in pixConvert2To8 in pixconv.c.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2020-36277
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=21997
- https://github.com/DanBloomberg/leptonica/compare/1.79.0...1.80.0
- https://github.com/DanBloomberg/leptonica/pull/499
- https://lists.debian.org/debian-lts-announce/2021/03/msg00037.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JQUEA2X6UTH4DMYCMZAWE2QQLN5YANUA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RD5AIWHWE334HGYZJR2U3I3JYKSSO2LW/
- https://security.gentoo.org/glsa/202107-53