RLSA-2026:86171

See a problem?
Please try reporting it to the source first.
Source
https://errata.rockylinux.org/RLSA-2026:86171
Import Source
https://storage.googleapis.com/resf-osv-data/RLSA-2026:86171.json
JSON Data
https://api.osv.dev/v1/vulns/RLSA-2026:86171
Upstream
CVE (20)
  • CVE-2026-58280
  • CVE-2026-66822
  • CVE-2026-69651
  • CVE-2026-70159
  • CVE-2026-70175
  • CVE-2026-70179
  • CVE-2026-70181
  • CVE-2026-70183
  • CVE-2026-70186
  • CVE-2026-70188
  • CVE-2026-70196
  • CVE-2026-88092
  • CVE-2026-92707
  • CVE-2026-96225
  • CVE-2026-96230
  • CVE-2026-96231
  • CVE-2026-96233
  • CVE-2026-96236
  • CVE-2026-96237
  • CVE-2026-96238
Published
2026-10-22T00:04:07Z
Modified
2026-10-22T00:30:04Z
Severity
  • 9.4 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L CVSS Calculator
Summary
Critical: .NET 9.0 security, bug fix, and enhancement update
Details

.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 [rhel-9.8.z] (JIRA:Rocky Linux-277800)

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.

Database specific 
{
    "license":  "CC-BY-4.0",
    "license_url":  "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory":  "RHSA-2026:86171"
}
References
Credits
    • Rocky Enterprise Software Foundation
    • Red Hat

Affected packages

Rocky Linux:9 / dotnet9.0

Package

Name
dotnet9.0
Purl
pkg:rpm/rocky-linux/dotnet9.0?distro=rocky-linux-9&epoch=0

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0:9.0.122-1.el9_8
Database specific
Show details 
{
    "yum_repository":  "AppStream"
}

Database specific

source 
"https://storage.googleapis.com/resf-osv-data/RLSA-2026:86171.json"