netfilter: nf_tables: fix use-after-free in nf_tables_addchain()
CVE-2026-23231
Scope
What the vendor says is affected
- cbl2 kubevirt 0.59.0-30 on CBL Mariner 2.0
- cbl2 kubevirt 0.59.0-31 on CBL Mariner 2.0
- azl3 kubevirt 1.5.3-2 on Azure Linux 3.0
- cbl2 kubevirt 0.59.0-35 on CBL Mariner 2.0
- cbl2 kubevirt 0.59.0-38 on CBL Mariner 2.0
- cbl2 kubevirt 0.59.0-38
- azl3 kubevirt 1.5.0-5 on Azure Linux 3.0
- cbl2 kubevirt 0.59.0-33 on CBL Mariner 2.0
Versions the vendor lists as fixed
- 1.6.3-1
- 1.5.3-1
Next step
What the vendor recommends
CBL-Mariner Releases
Review the complete instructions on the vendor's siteTimeline
When this advisory changed
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Updated by Microsoft Security Response Center
The vendor changed the advisory after it was first published.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.
Vulnerabilities