Upstream information

CVE-2025-11683 at MITRE

Description

YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure

Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read

The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v3 Scores
CVSS detail CNA (CISA-ADP) SUSE
Base Score 6.5 6.5
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector Adjacent Network Adjacent Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact High High
Integrity Impact None None
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1252111 [NEW]

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP7
  • perl-YAML-Syck >= 1.450.0-bp157.2.3.1
 Patchnames:
openSUSE-2026-180
openSUSE Leap 16.0
  • perl-YAML-Syck >= 1.450.0-bp160.1.1
 Patchnames:
openSUSE-Leap-16.0-packagehub-263
openSUSE Tumbleweed
  • perl-YAML-Syck >= 1.450.0-1.1
 Patchnames:
openSUSE-Tumbleweed-2026-10746

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Please note that this evaluation state might be work in progress, incomplete or outdated.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 Package Hub 15 SP7 perl-YAML-Syck Released

SUSE Timeline for this CVE

CVE page created: Thu Oct 16 04:02:16 2025
CVE page last modified: Sat May 30 17:19:18 2026