Upstream information
Description
YAML::Syck versions before 1.47 for Perl allow an out-of-bounds read via an unbounded newline scan in newline_len.In the bundled libsyck newline_len and is_newline dereference the scan pointer, and the following byte for a "\r\n" pair, with no NUL-terminator or bounds check. During block-scalar lexing at a document boundary the scan runs one byte past the heap lexer buffer. This is an incomplete fix of CVE-2025-11683, on a lexer path the earlier fix did not cover.
Any caller that runs Load or LoadFile on an untrusted document with a block scalar at a document boundary reaches the over-read.
SUSE information
Overall state of this security issue: Does not affect SUSE products
This issue is currently rated as having important severity.
| CVSS detail | CNA (CISA-ADP) |
|---|---|
| Base Score | 7.7 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
| Attack Vector | Local |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality Impact | High |
| Integrity Impact | None |
| Availability Impact | High |
| CVSSv3 Version | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP7 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP7 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 16.1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP applications 16.1 | perl-YAML | Analysis |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP5 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP6 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP4-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP5 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP5-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP6 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP6-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | perl-YAML | Analysis |
| SUSE Manager Proxy 4.3 | perl-YAML | Analysis |
| SUSE Manager Retail Branch Server 4.3 | perl-YAML | Analysis |
| SUSE Manager Server 4.3 | perl-YAML | Analysis |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE CaaS Platform 4.0 | perl-YAML | Analysis |
| SUSE Enterprise Storage 6 | perl-YAML | Analysis |
| SUSE Enterprise Storage 7 | perl-YAML | Analysis |
| SUSE Enterprise Storage 7.1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP5 | perl-YAML | Analysis |
| SUSE Linux Enterprise Desktop 15 SP6 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP1 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15-ESPOS | perl-YAML | Analysis |
| SUSE Linux Enterprise High Performance Computing 15-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise Module for Development Tools 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise Real Time 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise Real Time 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise Real Time 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP1-BCL | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP1-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP2-BCL | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP2-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP3-BCL | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15 SP3-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server 15-LTSS | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP1 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP2 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP3 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | perl-YAML | Analysis |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | perl-YAML | Analysis |
| SUSE Manager Proxy 4.0 | perl-YAML | Analysis |
| SUSE Manager Proxy 4.1 | perl-YAML | Analysis |
| SUSE Manager Proxy 4.2 | perl-YAML | Analysis |
| SUSE Manager Retail Branch Server 4.0 | perl-YAML | Analysis |
| SUSE Manager Retail Branch Server 4.1 | perl-YAML | Analysis |
| SUSE Manager Retail Branch Server 4.2 | perl-YAML | Analysis |
| SUSE Manager Server 4.0 | perl-YAML | Analysis |
| SUSE Manager Server 4.1 | perl-YAML | Analysis |
| SUSE Manager Server 4.2 | perl-YAML | Analysis |
| openSUSE Leap 15.3 | perl-YAML | Analysis |
| openSUSE Leap 15.4 | perl-YAML | Analysis |
| openSUSE Leap 15.5 | perl-YAML | Analysis |
| openSUSE Leap 15.6 | perl-YAML | Analysis |
SUSE Timeline for this CVE
CVE page created: Fri Jul 17 11:39:31 2026CVE page last modified: Fri Jul 17 19:36:12 2026