Red Hat Security Advisory: perl-YAML-LibYAML security update
A security vulnerability (CVE-2025-40908) has been identified in the perl-YAML-LibYAML package used in Red Hat Enterprise Linux 9.4 Extended Update Support. The vulnerability involves a file modification issue in the LibYAML Perl bindings. Red Hat has released an important security update to address this issue. The vulnerability is related to CWE-552 (files or directories accessible to unauthorized users).
AI Analysis
Technical Summary
The vulnerability CVE-2025-40908 affects the perl-YAML-LibYAML package, which is a Perl binding for the LibYAML C library implementing the YAML 1.1 specification. This vulnerability allows unauthorized file modification. Red Hat has issued an important security advisory (RHSA-2025:9338) providing updated packages for Red Hat Enterprise Linux 9.4 Extended Update Support across multiple architectures (x86_64, ppc64le, s390x, aarch64). The advisory references a patch that fixes the file modification vulnerability. No CVSS score is provided in the advisory, but the severity is rated as important by Red Hat and high in the input data. No known exploits in the wild have been reported.
Potential Impact
The vulnerability allows unauthorized modification of files via the perl-YAML-LibYAML package, potentially leading to unauthorized changes in system or application files. This could compromise system integrity or lead to further exploitation depending on the environment and usage of the affected package. The advisory rates the impact as important, indicating a significant security risk if left unpatched.
Mitigation Recommendations
Red Hat has released updated perl-YAML-LibYAML packages for Red Hat Enterprise Linux 9.4 Extended Update Support to fix this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2025:9338 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.
Red Hat Security Advisory: perl-YAML-LibYAML security update
Description
A security vulnerability (CVE-2025-40908) has been identified in the perl-YAML-LibYAML package used in Red Hat Enterprise Linux 9.4 Extended Update Support. The vulnerability involves a file modification issue in the LibYAML Perl bindings. Red Hat has released an important security update to address this issue. The vulnerability is related to CWE-552 (files or directories accessible to unauthorized users).
Affected software
pkg:rpm/redhat/perl-YAML-LibYAMLRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2025-40908 affects the perl-YAML-LibYAML package, which is a Perl binding for the LibYAML C library implementing the YAML 1.1 specification. This vulnerability allows unauthorized file modification. Red Hat has issued an important security advisory (RHSA-2025:9338) providing updated packages for Red Hat Enterprise Linux 9.4 Extended Update Support across multiple architectures (x86_64, ppc64le, s390x, aarch64). The advisory references a patch that fixes the file modification vulnerability. No CVSS score is provided in the advisory, but the severity is rated as important by Red Hat and high in the input data. No known exploits in the wild have been reported.
Potential Impact
The vulnerability allows unauthorized modification of files via the perl-YAML-LibYAML package, potentially leading to unauthorized changes in system or application files. This could compromise system integrity or lead to further exploitation depending on the environment and usage of the affected package. The advisory rates the impact as important, indicating a significant security risk if left unpatched.
Mitigation Recommendations
Red Hat has released updated perl-YAML-LibYAML packages for Red Hat Enterprise Linux 9.4 Extended Update Support to fix this vulnerability. Users should apply the security update as described in Red Hat advisory RHSA-2025:9338 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:9338
- Cve Count
- 1
Threat ID: 6a4049e027e9c79719832171
Added to database: 06/27/2026, 22:08:32 UTC
Last enriched: 06/27/2026, 22:27:46 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 18
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