CVE-2026-44673
7.5 ÉlevéeDescription
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.
Produits concernés
- CESNET libyang
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 10.0 Extended Update Support
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
- Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
- Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
- Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On
- Red Hat Enterprise Linux 8.8 Telecommunications Update Service
- Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
- Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
- Red Hat Enterprise Linux 9.6 Extended Update Support
Scores CVSS
| Version | Score | Source | Vecteur |
|---|---|---|---|
| 3.1 | 7.5 Élevée | security-advisories@github.com | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | 7.5 Élevée | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Faiblesses (CWE)
Références
- https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh
- https://access.redhat.com/errata/RHSA-2026:24545
- https://access.redhat.com/errata/RHSA-2026:24758
- https://access.redhat.com/errata/RHSA-2026:25051
- https://access.redhat.com/errata/RHSA-2026:49666
- https://access.redhat.com/errata/RHSA-2026:51339
- https://access.redhat.com/errata/RHSA-2026:51351
- https://access.redhat.com/errata/RHSA-2026:51368
- https://access.redhat.com/errata/RHSA-2026:65467
- https://access.redhat.com/errata/RHSA-2026:65477
- https://access.redhat.com/errata/RHSA-2026:65508
- https://access.redhat.com/security/cve/CVE-2026-44673
- https://bugzilla.redhat.com/show_bug.cgi?id=2477617
- https://github.com/CESNET/libyang/security/advisories/GHSA-vw2p-pq79-92xh
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44673.json