- Issued:
- 2026-07-20
- Updated:
- 2026-07-20
RHSA-2026:41893 - Important: .NET 8.0 security, bug fix, and enhancement update
Synopsis
Important: .NET 8.0 security, bug fix, and enhancement update
Type/Severity
Security Advisory: Important
Topic
An update for .NET 8.0 is now available for Red Hat Enterprise Linux 10.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 8.0.129 and .NET Runtime 8.0.29.
Security Fix(es):
-
dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)
-
dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)
-
ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)
-
ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)
-
ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)
-
dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)
-
dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)
-
dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)
-
dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)
-
dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)
-
dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)
-
dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)
-
dotnet: .NET: Denial of Service due to uncontrolled resource allocation (CVE-2026-50525)
-
dotnet: .NET Framework: Denial of Service via network-based buffer overflow (CVE-2026-50527)
-
dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation (CVE-2026-50648)
-
.NET: .NET: Network Spoofing Vulnerability (CVE-2026-50659)
-
dotnet: .NET Framework: Denial of Service via improper input validation (CVE-2026-50524)
Bug Fix(es) and Enhancement(s):
-
Update .NET 8.0 to SDK 8.0.129 and Runtime 8.0.29 [rhel-10.2.z] (JIRA:RHEL-192468)
-
dotnet8.0: Reduce time to detect hanging builds during .NET RPM builds (c10s) [rhel-10.2.z] (JIRA:RHEL-192329)
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.
Solution
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
Affected Products
| Product | Version | Arch |
|---|---|---|
| Red Hat Enterprise Linux for x86_64 | 10 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Update Support | 10.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - Extended Life Cycle | 10.2 | x86_64 |
| Red Hat Enterprise Linux for x86_64 - 4 years of updates | 10.2 | x86_64 |
| Red Hat Enterprise Linux for Power, little endian | 10 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Update Support | 10.2 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle | 10.2 | ppc64le |
| Red Hat Enterprise Linux for Power, little endian - 4 years of support | 10.2 | ppc64le |
| Red Hat Enterprise Linux for IBM z Systems | 10 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Update Support | 10.2 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle | 10.2 | s390x |
| Red Hat Enterprise Linux for IBM z Systems - 4 years of updates | 10.2 | s390x |
| Red Hat Enterprise Linux for ARM 64 | 10 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Update Support | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle | 10.2 | aarch64 |
| Red Hat Enterprise Linux for ARM 64 - 4 years of updates | 10.2 | aarch64 |
| Red Hat CodeReady Linux Builder for x86_64 | 10 | x86_64 |
| Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support | 10.2 | x86_64 |
| Red Hat CodeReady Linux Builder for Power, little endian | 10 | ppc64le |
| Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support | 10.2 | ppc64le |
| Red Hat CodeReady Linux Builder for IBM z Systems | 10 | s390x |
| Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support | 10.2 | s390x |
| Red Hat CodeReady Linux Builder for ARM 64 | 10 | aarch64 |
| Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support | 10.2 | aarch64 |
Updated Packages
- dotnet-apphost-pack-8.0-debuginfo-8.0.29-1.el10_2.aarch64.rpm
- dotnet-apphost-pack-8.0-debuginfo-8.0.29-1.el10_2.x86_64.rpm
- dotnet-runtime-8.0-debuginfo-8.0.29-1.el10_2.x86_64.rpm
- dotnet-runtime-8.0-debuginfo-8.0.29-1.el10_2.s390x.rpm
- dotnet-runtime-dbg-8.0-8.0.29-1.el10_2.ppc64le.rpm
- aspnetcore-runtime-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-sdk-dbg-8.0-8.0.129-1.el10_2.aarch64.rpm
- aspnetcore-targeting-pack-8.0-8.0.29-1.el10_2.x86_64.rpm
- aspnetcore-runtime-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-sdk-8.0-8.0.129-1.el10_2.ppc64le.rpm
- dotnet-runtime-dbg-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-sdk-8.0-debuginfo-8.0.129-1.el10_2.s390x.rpm
- dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el10_2.x86_64.rpm
- dotnet-targeting-pack-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-templates-8.0-8.0.129-1.el10_2.x86_64.rpm
- aspnetcore-targeting-pack-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-templates-8.0-8.0.129-1.el10_2.s390x.rpm
- dotnet-apphost-pack-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-sdk-8.0-debuginfo-8.0.129-1.el10_2.x86_64.rpm
- dotnet-sdk-dbg-8.0-8.0.129-1.el10_2.s390x.rpm
- aspnetcore-runtime-dbg-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet8.0-debugsource-8.0.129-1.el10_2.s390x.rpm
- dotnet-sdk-8.0-8.0.129-1.el10_2.aarch64.rpm
- dotnet8.0-debugsource-8.0.129-1.el10_2.x86_64.rpm
- aspnetcore-runtime-dbg-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-runtime-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-hostfxr-8.0-debuginfo-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-sdk-8.0-8.0.129-1.el10_2.x86_64.rpm
- dotnet-hostfxr-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet-sdk-8.0-debuginfo-8.0.129-1.el10_2.ppc64le.rpm
- aspnetcore-runtime-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-targeting-pack-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-runtime-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet-hostfxr-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-sdk-dbg-8.0-8.0.129-1.el10_2.ppc64le.rpm
- dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el10_2.aarch64.rpm
- dotnet-targeting-pack-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-sdk-dbg-8.0-8.0.129-1.el10_2.x86_64.rpm
- dotnet-runtime-8.0-debuginfo-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-sdk-8.0-debuginfo-8.0.129-1.el10_2.aarch64.rpm
- aspnetcore-targeting-pack-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-hostfxr-8.0-debuginfo-8.0.29-1.el10_2.s390x.rpm
- aspnetcore-runtime-dbg-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-runtime-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-targeting-pack-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet8.0-debugsource-8.0.129-1.el10_2.aarch64.rpm
- dotnet-apphost-pack-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-hostfxr-8.0-debuginfo-8.0.29-1.el10_2.aarch64.rpm
- dotnet-sdk-8.0-8.0.129-1.el10_2.s390x.rpm
- aspnetcore-targeting-pack-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet8.0-8.0.129-1.el10_2.src.rpm
- dotnet-apphost-pack-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet-runtime-dbg-8.0-8.0.29-1.el10_2.aarch64.rpm
- aspnetcore-runtime-dbg-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-templates-8.0-8.0.129-1.el10_2.aarch64.rpm
- dotnet-apphost-pack-8.0-debuginfo-8.0.29-1.el10_2.ppc64le.rpm
- aspnetcore-runtime-8.0-8.0.29-1.el10_2.aarch64.rpm
- dotnet-hostfxr-8.0-debuginfo-8.0.29-1.el10_2.x86_64.rpm
- dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el10_2.ppc64le.rpm
- dotnet-templates-8.0-8.0.129-1.el10_2.ppc64le.rpm
- dotnet-apphost-pack-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-runtime-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-apphost-pack-8.0-debuginfo-8.0.29-1.el10_2.s390x.rpm
- dotnet-hostfxr-8.0-8.0.29-1.el10_2.x86_64.rpm
- dotnet-hostfxr-8.0-8.0.29-1.el10_2.ppc64le.rpm
- dotnet-runtime-8.0-debuginfo-8.0.29-1.el10_2.aarch64.rpm
- dotnet8.0-debugsource-8.0.129-1.el10_2.ppc64le.rpm
- dotnet-runtime-dbg-8.0-8.0.29-1.el10_2.s390x.rpm
- dotnet-sdk-8.0-source-built-artifacts-8.0.129-1.el10_2.s390x.rpm
Fixes
- This content is not included.BZ - 2499217
- This content is not included.BZ - 2500109
- This content is not included.BZ - 2500189
- This content is not included.BZ - 2500492
- This content is not included.BZ - 2500502
- This content is not included.BZ - 2500509
- This content is not included.BZ - 2500515
- This content is not included.BZ - 2500556
- This content is not included.BZ - 2500562
- This content is not included.BZ - 2500563
- This content is not included.BZ - 2500565
- This content is not included.BZ - 2500577
- This content is not included.BZ - 2500580
- This content is not included.BZ - 2500581
- This content is not included.BZ - 2500587
- This content is not included.BZ - 2500593
CVEs
- CVE-2026-47300
- CVE-2026-47302
- CVE-2026-47303
- CVE-2026-47304
- CVE-2026-50524
- CVE-2026-50525
- CVE-2026-50526
- CVE-2026-50527
- CVE-2026-50528
- CVE-2026-50646
- CVE-2026-50648
- CVE-2026-50649
- CVE-2026-50650
- CVE-2026-50651
- CVE-2026-50659
- CVE-2026-56170
- CVE-2026-57108
References
Additional information
- The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at Security Contacts and Procedures.
- Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.