serial: core: fix infinite loop in handle_tx() for PORT_UNKNOWN

MediumVendor CVSS 5.5 / 10 1 CVE Published Apr 5, 2026 at 1:01 AM UTC

Summary

Mariner

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Release Notes

Update history

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

Nov 8, 2026 at 1:30 PM UTC
- Added affected products: azl3 kernel 6.6.159.1-1 on Azure Linux 3.0, azl3 kernel 6.6.161.1-1 on Azure Linux 3.0.
Oct 8, 2026 at 9:05 AM UTC
- Added affected products: azl3 kernel 6.6.137.1-2 on Azure Linux 3.0, azl3 kernel 6.6.138.1-1 on Azure Linux 3.0, azl3 kernel 6.6.139.1-1 on Azure Linux 3.0, azl3 kernel 6.6.141.1-1 on Azure Linux 3.0, azl3 kernel 6.6.143.1-1 on Azure Linux 3.0.
- The vendor changed its remediation guidance.

Apr 5, 2026 at 1:01 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 27, 2026 at 11:11 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 5, 2026 at 3:04 PM UTC
Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
Nov 10, 2026 at 2:00 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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