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libyang is a YANG data modeling language library. Prior to SO 5.2.15, lyb_read_string() in src/parser_lyb.c contains an integer overflow that results in a heap buffer overflow when parsing a maliciously crafted LYB binary blob. An attacker who can supply LYB data to any libyang consumer (NETCONF server, sysrepo, etc.) can trigger a crash or potential heap corruption. This vulnerability is fixed in SO 5.2.15.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libyangUpgrade libyang-develUpgrade libyang-devel-doc | Jun 9, 2026 | Jun 8, 2026 |
| Oracle_linux | — | Upgrade libyang-devel-docUpgrade libyang-develUpgrade libyang | Jun 12, 2026 | May 14, 2026 |
| Redhat_linux | — | Upgrade libyang-devel-docUpgrade python3-libyang-debuginfoUpgrade libyang-tools-debuginfoUpgrade libyang-debugsourceUpgrade libyang-debuginfoUpgrade libyang-cpp-debuginfoUpgrade libyang-develUpgrade libyang | Jun 10, 2026 | May 14, 2026 |
| Rocky_linux | — | Upgrade libyang-debugsourceUpgrade libyangUpgrade libyang-debuginfoUpgrade libyang-develUpgrade libyang-devel-doc | Jun 17, 2026 | Jun 13, 2026 |
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