Important: libyang security update

ID ALSA-2019:4360
Type almalinux
Reporter AlmaLinux
Modified 2021-08-11T13:42:14


The libyang package provides a library for YANG data modeling language. libyang is a YANG data modelling language parser and toolkit written (and providing API) in C. The library is used e.g. in libnetconf2, Netopeer2, sysrepo and FRRouting projects.

Security Fix(es):

  • libyang: stack-based buffer overflow in make_canonical when bits leaf type is used (CVE-2019-19333)

  • libyang: stack-based buffer overflow in make_canonical when identityref leaf type is used (CVE-2019-19334)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.


The libyang-devel sub-package has recently been removed from the AppStream repository. If you have previously installed libyang-devel, remove it prior to applying this advisory to make the update successful.