CVE-2020-6851
High
CVE-2020-6851
OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.
Exploit probability
5.0%
Published
January 13, 2020
Required by
Not available
Last source change
August 7, 2026
02 / AFFECTED SOFTWARE
Affected packages
3 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
Open Source Vulnerabilities
CVE-2020-6851
View original source
OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.
05 / REFERENCES
Further evidence
- https://access.redhat.com/errata/RHSA-2020:0262
- https://access.redhat.com/errata/RHSA-2020:0274
- https://access.redhat.com/errata/RHSA-2020:0296
- https://github.com/uclouvain/openjpeg/issues/1228
- https://lists.debian.org/debian-lts-announce/2020/01/msg00025.html
- https://lists.debian.org/debian-lts-announce/2020/07/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LACIIDDCKZJEPKTTFILSOSBQL7L3FC6V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XBRMI2D3XPVWKE3V52KRBW7BJVLS5LD3/
- https://www.debian.org/security/2021/dsa-4882
- https://www.oracle.com/security-alerts/cpujul2020.html