Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update
A moderate severity out-of-bounds read vulnerability (CVE-2025-49133) has been identified in libtpms, a library providing Trusted Platform Module (TPM) functionality for virtual machines. This vulnerability affects multiple versions of libtpms distributed with Red Hat Enterprise Linux 9 and 10 across various architectures. Red Hat has released security updates addressing this issue. The vulnerability is classified under CWE-125 (Out-of-bounds Read). No known exploits are reported in the wild. Users are advised to apply the official patches provided by Red Hat to remediate the vulnerability.
AI Analysis
Technical Summary
The libtpms library, used to provide TPM functionality for virtual machines in Red Hat Enterprise Linux 9, contains an out-of-bounds read vulnerability identified as CVE-2025-49133. This vulnerability is classified under CWE-125 and has been rated with moderate security impact by Red Hat Product Security. Multiple updated packages have been released to fix this issue across different architectures and update streams of Red Hat Enterprise Linux 9. The advisory references official Red Hat errata RHSA-2025:12100 and RHSA-2025:12111, which provide detailed patch information and instructions for remediation.
Potential Impact
The vulnerability allows out-of-bounds memory reads in the libtpms library, which could lead to unintended information disclosure or instability in virtual machine TPM functionality. However, no active exploitation has been reported. The security impact is rated moderate by Red Hat, indicating a medium level of risk to affected systems.
Mitigation Recommendations
Red Hat has released official security updates that fix the out-of-bounds read vulnerability in libtpms for Red Hat Enterprise Linux 9 and its variants. Users should apply the updates as described in the Red Hat advisories RHSA-2025:12100 and RHSA-2025:12111. Detailed instructions for applying these updates are available at https://access.redhat.com/articles/11258. Applying these patches will remediate the vulnerability. No additional mitigation steps are specified or required by the vendor.
Red Hat Security Advisory: virt:rhel and virt-devel:rhel security update
Description
A moderate severity out-of-bounds read vulnerability (CVE-2025-49133) has been identified in libtpms, a library providing Trusted Platform Module (TPM) functionality for virtual machines. This vulnerability affects multiple versions of libtpms distributed with Red Hat Enterprise Linux 9 and 10 across various architectures. Red Hat has released security updates addressing this issue. The vulnerability is classified under CWE-125 (Out-of-bounds Read). No known exploits are reported in the wild. Users are advised to apply the official patches provided by Red Hat to remediate the vulnerability.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The libtpms library, used to provide TPM functionality for virtual machines in Red Hat Enterprise Linux 9, contains an out-of-bounds read vulnerability identified as CVE-2025-49133. This vulnerability is classified under CWE-125 and has been rated with moderate security impact by Red Hat Product Security. Multiple updated packages have been released to fix this issue across different architectures and update streams of Red Hat Enterprise Linux 9. The advisory references official Red Hat errata RHSA-2025:12100 and RHSA-2025:12111, which provide detailed patch information and instructions for remediation.
Potential Impact
The vulnerability allows out-of-bounds memory reads in the libtpms library, which could lead to unintended information disclosure or instability in virtual machine TPM functionality. However, no active exploitation has been reported. The security impact is rated moderate by Red Hat, indicating a medium level of risk to affected systems.
Mitigation Recommendations
Red Hat has released official security updates that fix the out-of-bounds read vulnerability in libtpms for Red Hat Enterprise Linux 9 and its variants. Users should apply the updates as described in the Red Hat advisories RHSA-2025:12100 and RHSA-2025:12111. Detailed instructions for applying these updates are available at https://access.redhat.com/articles/11258. Applying these patches will remediate the vulnerability. No additional mitigation steps are specified or required by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:16428
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a3de72d4853345fc1127da6
Added to database: 06/26/2026, 02:42:53 UTC
Last enriched: 08/07/2026, 00:55:06 UTC
Last updated: 08/24/2026, 10:52:06 UTC
Views: 50
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