ALSA-2026:86170
ALSA-2026:86170 · Critical: .NET 9.0 security, bug fix, and enhancement update
This page contains facts from public vulnerability sources. Check the original advisory before updating.
.NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything. SDK version: 9.0.122 Runtime version: 9.0.21 Security Fix(es): * dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280) * dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822) * dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651) * dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159) * dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175) * dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179) * dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181) * dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183) * dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186) * dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188) * dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70196) * dotnet: ASP.NET Core Tampering Vulnerability (CVE-2026-88092) * dotnet10.0: dotnet8.0: dotnet9.0: dotnet: MessagePack: Nested arrays can blow past buffer length limits (CVE-2026-92707) * dotnet: dotnet8.0: dotnet9.0: dotnet10.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96225) * dotnet9.0: dotnet10.0: dotnet8.0: dotnet: ASP.NET Core Remote Code Execution Vulnerability (CVE-2026-96230) * dotnet: dotnet9.0: dotnet10.0: dotnet8.0: .NET Elevation of Privilege Vulnerability (CVE-2026-96231) * dotnet10.0: dotnet: dotnet8.0: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96233) * dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-96236) * dotnet8.0: dotnet10.0: dotnet9.0: .NET Remote Code Execution Vulnerability (CVE-2026-96237) * dotnet8.0: dotnet10.0: dotnet9.0: dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-96238) Bug Fix(es) and Enhancement(s): * Update .NET 9.0 to SDK 9.0.122 and Runtime 9.0.21 (JIRA:AlmaLinux-277797) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fix available
- Published
- Updated
Stack: system
Affected products and versions
aspnetcore-runtime-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
aspnetcore-runtime-dbg-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
aspnetcore-targeting-pack-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-apphost-pack-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-hostfxr-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-runtime-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-runtime-dbg-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-sdk-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
dotnet-sdk-9.0-source-built-artifacts AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
dotnet-sdk-aot-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
dotnet-sdk-dbg-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
dotnet-targeting-pack-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.21-1.el8_10
Update to 9.0.21-1.el8_10
dotnet-templates-9.0 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
netstandard-targeting-pack-2.1 AlmaLinux:8
- Affected ranges
- ECOSYSTEM: < 9.0.122-1.el8_10
Update to 9.0.122-1.el8_10
Original sources
- https://access.redhat.com/errata/RHSA-2026:86170
- https://access.redhat.com/security/cve/CVE-2026-58280
- https://access.redhat.com/security/cve/CVE-2026-66822
- https://access.redhat.com/security/cve/CVE-2026-69651
- https://access.redhat.com/security/cve/CVE-2026-70159
- https://access.redhat.com/security/cve/CVE-2026-70175
- https://access.redhat.com/security/cve/CVE-2026-70179
- https://access.redhat.com/security/cve/CVE-2026-70181
- https://access.redhat.com/security/cve/CVE-2026-70183
- https://access.redhat.com/security/cve/CVE-2026-70186
- https://access.redhat.com/security/cve/CVE-2026-70188
- https://access.redhat.com/security/cve/CVE-2026-70196
- https://access.redhat.com/security/cve/CVE-2026-88092
- https://access.redhat.com/security/cve/CVE-2026-92707
- https://access.redhat.com/security/cve/CVE-2026-96225
- https://access.redhat.com/security/cve/CVE-2026-96230
- https://access.redhat.com/security/cve/CVE-2026-96231
- https://access.redhat.com/security/cve/CVE-2026-96233
- https://access.redhat.com/security/cve/CVE-2026-96236
- https://access.redhat.com/security/cve/CVE-2026-96237
- https://access.redhat.com/security/cve/CVE-2026-96238
- https://bugzilla.redhat.com/2548778
- https://bugzilla.redhat.com/2548781
- https://bugzilla.redhat.com/2548784
- https://bugzilla.redhat.com/2548786
- https://bugzilla.redhat.com/2548787
- https://bugzilla.redhat.com/2548790
- https://bugzilla.redhat.com/2548791
- https://bugzilla.redhat.com/2548792
- https://bugzilla.redhat.com/2548793
- https://bugzilla.redhat.com/2548796
- https://bugzilla.redhat.com/2548798
- https://bugzilla.redhat.com/2548799
- https://bugzilla.redhat.com/2548800
- https://bugzilla.redhat.com/2548803
- https://bugzilla.redhat.com/2548804
- https://bugzilla.redhat.com/2548805
- https://bugzilla.redhat.com/2548806
- https://bugzilla.redhat.com/2548807
- https://bugzilla.redhat.com/2548808
- https://bugzilla.redhat.com/2548809
- https://errata.almalinux.org/8/ALSA-2026-86170.html
- https://osv.dev/vulnerability/ALSA-2026:86170