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 concerns the 'tun' driver in the Linux kernel used in Microsoft Azure Linux 3.0. It involves a failure in the tun_xdp_one() function where a page is freed upon build_skb failure. The exact impact and exploitation details are not provided. No CVSS score or vendor advisory is available to clarify severity or remediation status.
Potential Impact
The impact details are not explicitly described in the available data. The vulnerability involves memory management in the tun driver, which could potentially lead to resource mismanagement or instability. However, without further details or vendor guidance, the precise impact cannot be determined.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Users should monitor Microsoft Security Response Center advisories for updates regarding this vulnerability.
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 concerns the 'tun' driver in the Linux kernel used in Microsoft Azure Linux 3.0. It involves a failure in the tun_xdp_one() function where a page is freed upon build_skb failure. The exact impact and exploitation details are not provided. No CVSS score or vendor advisory is available to clarify severity or remediation status.
Potential Impact
The impact details are not explicitly described in the available data. The vulnerability involves memory management in the tun driver, which could potentially lead to resource mismanagement or instability. However, without further details or vendor guidance, the precise impact cannot be determined.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided. Users should monitor Microsoft Security Response Center advisories for updates regarding this vulnerability.
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: 6/10/2026, 11:42:20 AM
Last enriched: 6/10/2026, 12:04:23 PM
Last updated: 6/10/2026, 2:37:59 PM
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.