High severity7.8NVD Advisory· Published Jul 20, 2021· Updated Jun 17, 2026
CVE-2020-36430
CVE-2020-36430
Description
libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19- libass/libassdescription
- osv-coords17 versionspkg:rpm/opensuse/libass&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/libass&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/libass&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP2pkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/libass&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/libass&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/libass&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/libass&distro=SUSE%20Manager%20Server%204.0
< 0.14.0-lp152.4.9.1+ 16 more
- (no CPE)range: < 0.14.0-lp152.4.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
- (no CPE)range: < 0.14.0-3.9.1
Patches
Vulnerability mechanics
References
5- bugs.chromium.org/p/oss-fuzz/issues/detailnvdIssue TrackingPatchThird Party Advisory
- github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632nvdPatchThird Party Advisory
- github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yamlnvdThird Party Advisory
- security.gentoo.org/glsa/202208-13nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/nvd
News mentions
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