selinux: fix overlayfs mmap() and mprotect() access checks
CVE-2026-46054 is a high-severity vulnerability related to SELinux's handling of overlayfs mmap() and mprotect() access checks. It affects Microsoft products including Azure Linux kernel version 3.0. The vulnerability involves improper access control checks that could allow escalation of privileges. No known exploits are reported in the wild. There is no explicit patch or remediation information available in the provided data.
AI Analysis
Technical Summary
This vulnerability concerns SELinux's overlayfs implementation, specifically in the mmap() and mprotect() system calls where access checks are improperly enforced. This can lead to unauthorized access or privilege escalation under certain conditions. The issue is tracked as CWE-280 (Improper Access Control). The affected product includes Microsoft Azure Linux kernel version 3.0. No patch or official fix details are provided in the available information.
Potential Impact
Successful exploitation could result in a high impact on confidentiality and integrity, allowing an attacker with limited privileges to gain unauthorized access or escalate privileges. Availability impact is not indicated. No known exploits have been reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is provided in the current data.
selinux: fix overlayfs mmap() and mprotect() access checks
Description
CVE-2026-46054 is a high-severity vulnerability related to SELinux's handling of overlayfs mmap() and mprotect() access checks. It affects Microsoft products including Azure Linux kernel version 3.0. The vulnerability involves improper access control checks that could allow escalation of privileges. No known exploits are reported in the wild. There is no explicit patch or remediation information available in the provided data.
CVSS v3.1
Score 7.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns SELinux's overlayfs implementation, specifically in the mmap() and mprotect() system calls where access checks are improperly enforced. This can lead to unauthorized access or privilege escalation under certain conditions. The issue is tracked as CWE-280 (Improper Access Control). The affected product includes Microsoft Azure Linux kernel version 3.0. No patch or official fix details are provided in the available information.
Potential Impact
Successful exploitation could result in a high impact on confidentiality and integrity, allowing an attacker with limited privileges to gain unauthorized access or escalate privileges. Availability impact is not indicated. No known exploits have been reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is provided in the current data.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-46054
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- 3.1
Threat ID: 6a18ab92e29bf47b50289681
Added to database: 05/28/2026, 20:54:42 UTC
Last enriched: 07/09/2026, 10:45:42 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 87
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