tun: free page on build_skb failure in tun_xdp_one()
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
AI Analysis
Technical Summary
This vulnerability involves the tun driver in the Linux kernel used by Microsoft Azure Linux 3.0. The issue occurs when a failure in the build_skb function within tun_xdp_one() leads to a free page operation, which may cause memory management issues. No further technical details or exploitation methods are described in the available data. The vulnerability is identified by CVE-2026-46322 and published by the Microsoft Security Response Center.
Potential Impact
The impact specifics are not detailed in the provided information. The vulnerability likely affects kernel memory handling in the tun driver, which could potentially lead to system instability or denial of service if exploited. No confirmed exploits or impact scenarios are reported.
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 available data.
tun: free page on build_skb failure in tun_xdp_one()
Description
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the tun driver in the Linux kernel used by Microsoft Azure Linux 3.0. The issue occurs when a failure in the build_skb function within tun_xdp_one() leads to a free page operation, which may cause memory management issues. No further technical details or exploitation methods are described in the available data. The vulnerability is identified by CVE-2026-46322 and published by the Microsoft Security Response Center.
Potential Impact
The impact specifics are not detailed in the provided information. The vulnerability likely affects kernel memory handling in the tun driver, which could potentially lead to system instability or denial of service if exploited. No confirmed exploits or impact scenarios are reported.
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 available 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-2026-46322
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a294d9c8dd33fbd853b00dd
Added to database: 06/10/2026, 11:42:20 UTC
Last enriched: 06/26/2026, 16:22:57 UTC
Last updated: 07/31/2026, 19:24:50 UTC
Views: 58
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