Red Hat Security Advisory: kernel security update
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) * kernel: XFS data corruption using reflink () For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This vulnerability involves a use-after-free condition in the KVM x86 shadow paging implementation triggered by an unexpected Guest Frame Number. The issue could cause memory corruption in virtualized environments running affected Microsoft products such as Azure Linux 3.0. No detailed technical exploitation or impact information is provided, and no CVSS score is assigned.
Potential Impact
The vulnerability may allow memory corruption in the KVM virtualization layer, potentially affecting the stability or security of virtual machines. However, no known exploits or detailed impact scenarios are documented at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Until an official fix is released, users should follow vendor recommendations and avoid exposure to untrusted guest code in virtualized environments.
Red Hat Security Advisory: kernel security update
Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CVE-2026-46113) * kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role (CVE-2026-53359) * kernel: XFS data corruption using reflink () For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the KVM x86 shadow paging implementation triggered by an unexpected Guest Frame Number. The issue could cause memory corruption in virtualized environments running affected Microsoft products such as Azure Linux 3.0. No detailed technical exploitation or impact information is provided, and no CVSS score is assigned.
Potential Impact
The vulnerability may allow memory corruption in the KVM virtualization layer, potentially affecting the stability or security of virtual machines. However, no known exploits or detailed impact scenarios are documented at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. Until an official fix is released, users should follow vendor recommendations and avoid exposure to untrusted guest code in virtualized environments.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-46113
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a19fec3e29bf47b500fe082
Added to database: 05/29/2026, 21:01:55 UTC
Last enriched: 05/29/2026, 21:10:17 UTC
Last updated: 07/18/2026, 13:34:58 UTC
Views: 108
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