A vulnerability identified as CVE-2026-45893 in the Linux kernel's AppArmor component involves improper handling of possibly unaligned memory during…
A vulnerability identified as CVE-2026-45893 in the Linux kernel's AppArmor component involves improper handling of possibly unaligned memory during table creation from a source blob that may originate from userspace. The issue has been fixed by correcting and optimizing the copying process to avoid unaligned memory accesses, which could otherwise lead to memory access errors. The vulnerability affects version 3.0 of the product. No known exploits are reported in the wild.
AI Analysis
Technical Summary
CVE-2026-45893 is a vulnerability in the Linux kernel's AppArmor subsystem where the creation of tables from potentially unaligned userspace memory was not properly handled. This could cause unaligned memory accesses, which are unsafe and may lead to memory corruption or denial of service. The fix involves correcting the copying process to safely handle unaligned memory, thereby resolving the issue. The vulnerability is classified under CWE-125 (Out-of-bounds Read). The affected version is exactly 3.0. There is no CVSS score provided, but the vulnerability has high confidentiality impact and high availability impact according to the provided vector.
Potential Impact
The vulnerability allows an attacker with limited privileges (local access with low complexity) to cause a high confidentiality impact and high availability impact by exploiting unaligned memory access in AppArmor table creation. This could result in memory corruption or denial of service conditions. Integrity impact is not affected. No known exploits are currently reported in the wild.
Mitigation Recommendations
No official patch links are provided in the data, and patch status is not explicitly confirmed. Therefore, patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel vulnerability, monitor for official kernel updates from the vendor or distribution and apply them promptly once available. No specific temporary mitigations are indicated.
A vulnerability identified as CVE-2026-45893 in the Linux kernel's AppArmor component involves improper handling of possibly unaligned memory during…
Description
A vulnerability identified as CVE-2026-45893 in the Linux kernel's AppArmor component involves improper handling of possibly unaligned memory during table creation from a source blob that may originate from userspace. The issue has been fixed by correcting and optimizing the copying process to avoid unaligned memory accesses, which could otherwise lead to memory access errors. The vulnerability affects version 3.0 of the product. No known exploits are reported in the wild.
CVSS v3.1
Score 7.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45893 is a vulnerability in the Linux kernel's AppArmor subsystem where the creation of tables from potentially unaligned userspace memory was not properly handled. This could cause unaligned memory accesses, which are unsafe and may lead to memory corruption or denial of service. The fix involves correcting the copying process to safely handle unaligned memory, thereby resolving the issue. The vulnerability is classified under CWE-125 (Out-of-bounds Read). The affected version is exactly 3.0. There is no CVSS score provided, but the vulnerability has high confidentiality impact and high availability impact according to the provided vector.
Potential Impact
The vulnerability allows an attacker with limited privileges (local access with low complexity) to cause a high confidentiality impact and high availability impact by exploiting unaligned memory access in AppArmor table creation. This could result in memory corruption or denial of service conditions. Integrity impact is not affected. No known exploits are currently reported in the wild.
Mitigation Recommendations
No official patch links are provided in the data, and patch status is not explicitly confirmed. Therefore, patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since this is a Linux kernel vulnerability, monitor for official kernel updates from the vendor or distribution and apply them promptly once available. No specific temporary mitigations are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45893
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- 3.1
Threat ID: 6a18ab8ae29bf47b50289138
Added to database: 05/28/2026, 20:54:34 UTC
Last enriched: 06/26/2026, 23:38:57 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 73
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