Bug 2477617 (CVE-2026-44673)
| Summary: | CVE-2026-44673 libyang: libyang: Denial of Service or arbitrary code execution via maliciously crafted LYB binary blob | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | rhel-process-autobot, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in libyang, a YANG data modeling language library. An integer overflow in the `lyb_read_string()` function can lead to a heap buffer overflow when parsing a maliciously crafted LYB binary blob. A remote attacker, by supplying this malicious LYB data to any libyang consumer (such as a NETCONF server), could trigger a crash, resulting in a denial of service (DoS), or potentially achieve arbitrary code execution through heap corruption.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2477966 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-05-14 21:01:31 UTC
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2026:24545 https://access.redhat.com/errata/RHSA-2026:24545 This issue has been addressed in the following products: Red Hat Enterprise Linux 10 Via RHSA-2026:24758 https://access.redhat.com/errata/RHSA-2026:24758 This issue has been addressed in the following products: Red Hat Enterprise Linux 9 Via RHSA-2026:25051 https://access.redhat.com/errata/RHSA-2026:25051 This issue has been addressed in the following products: Red Hat Enterprise Linux 10.0 Extended Update Support Via RHSA-2026:49666 https://access.redhat.com/errata/RHSA-2026:49666 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Red Hat Enterprise Linux 8.8 Telecommunications Update Service Via RHSA-2026:51339 https://access.redhat.com/errata/RHSA-2026:51339 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Via RHSA-2026:51351 https://access.redhat.com/errata/RHSA-2026:51351 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Via RHSA-2026:51368 https://access.redhat.com/errata/RHSA-2026:51368 |