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dotnet8 (8.0.132-8.0.32-0ubuntu1~22.04.1) jammy-security; urgency=medium
* New upstream release
* SECURITY UPDATE: denial of service
- CVE-2026-58280: Signed XML fixes add input-depth and operation-count
limits, prohibit DTD processing by default, validate entity references,
bound encrypted-data candidate processing, and cap attributes and
namespaces used by C14N transforms.
* SECURITY UPDATE: information disclosure
- CVE-2026-66822: SocketsHttpHandler can retain a Proxy-Authorization
header across an HTTP redirect and leak basic proxy credentials to the
destination server.
* SECURITY UPDATE: denial of service
- CVE-2026-69651: Signed XML fixes add input-depth and operation-count
limits, prohibit DTD processing by default, validate entity references,
bound encrypted-data candidate processing, and cap attributes and
namespaces used by C14N transforms.
* SECURITY UPDATE: denial of service
- CVE-2026-70159: SignalR stateful reconnect clients can indefinitely block
broadcasts through MessageBuffer.ResendAsync backpressure and retain
associated resources.
* SECURITY UPDATE: information disclosure
- CVE-2026-70175: ASP.NET Core Identity password-reset and confirmation
flows can send mail to the unvalidated request address instead of the
user's stored canonical address.
* SECURITY UPDATE: security feature bypass
- CVE-2026-70179: ASP.NET Core Negotiate LDAP authentication can associate
an authenticated identity with an unintended LDAP principal when the LDAP
result is not verified against the Kerberos principal SID.
* SECURITY UPDATE: denial of service
- CVE-2026-70181: FileBufferingReadStream eagerly rents buffers during
multipart processing, allowing memory exhaustion and denial of service.
* SECURITY UPDATE: security feature bypass
- CVE-2026-70183: A stale asynchronous authorization result in Blazor
AuthorizeRouteView can be applied after navigation or an
authorization-state change, bypassing the current [Authorize] decision.
* SECURITY UPDATE: denial of service
- CVE-2026-70186: An unauthenticated remote attacker can send crafted
HTTP/3 reset or abort sequences that deadlock Kestrel connection
handling. Repeated requests can cause excessive blocked-thread creation
and exhaust server resources, resulting in denial of service. The
application must expose an HTTP/3 endpoint to the attacker.
* SECURITY UPDATE: security feature bypass
- CVE-2026-70188: Kestrel accepts newline characters in HTTP/2 request
trailers and values retrieved from the dynamic HPACK table instead of
treating them as malformed.
* SECURITY UPDATE: denial of service
- CVE-2026-70196: Incrementally arriving form data can cause FormPipeReader
to repeatedly rescan the full buffered body, resulting in quadratic CPU
consumption and denial of service.
* SECURITY UPDATE: denial of service
- CVE-2026-84008: SignedCms.CheckSignature can repeatedly reparse
attacker-controlled X.509 data, causing unauthenticated quadratic CPU
exhaustion.
* SECURITY UPDATE: information disclosure
- CVE-2026-88092: An aborted Kestrel HTTP/1 connection can reparse unread
request-body bytes as another request, creating a request-smuggling or
desynchronization path.
* SECURITY UPDATE: denial of service
- CVE-2026-92707: SignalR's MessagePack protocol can consume excessive
memory while deserializing deeply nested attacker-controlled arrays,
resulting in unauthenticated remote denial of service.
* SECURITY UPDATE: spoofing
- CVE-2026-96222: KeyInfoX509Data can accept serialized certificate formats
containing attacker-controlled chain metadata instead of requiring a
plain X.509 certificate, contributing to certificate-forgery and
token-spoofing paths.
* SECURITY UPDATE: elevation of privilege
- CVE-2026-96225: Unix named-mutex and shared-memory paths can be
manipulated through insecure global directories, symlink races, and
unsafe permission changes, allowing local attackers to truncate or
overwrite files, widen directory permissions, or elevate privileges.
* SECURITY UPDATE: remote code execution
- CVE-2026-96230: The Blazor WebAssembly development-server debug page can
reflect unencoded exception text, allowing cross-origin script injection
through the unauthenticated /_framework/debug endpoint used by dotnet
watch.
* SECURITY UPDATE: elevation of privilege
- CVE-2026-96231: Unix named-mutex and shared-memory paths can be
manipulated through insecure global directories, symlink races, and
unsafe permission changes, allowing local attackers to truncate or
overwrite files, widen directory permissions, or elevate privileges.
* SECURITY UPDATE: denial of service
- CVE-2026-96233: DateTime Hebrew-number parsing can read outside expected
stack bounds and terminate the process.
* SECURITY UPDATE: denial of service
- CVE-2026-96236: ASP.NET Core request-localization fallback can add
attacker-supplied synthetic culture names to the runtime's global cache,
allowing unauthenticated requests to cause unbounded memory growth and
denial of service.
* SECURITY UPDATE: remote code execution
- CVE-2026-96237: SDK workload package downloads and integrity-repair paths
can bypass NuGet Package Source Mapping, allowing packages to be
reacquired from an unmapped attacker-controlled feed and potentially
enabling remote code execution.
* SECURITY UPDATE: security feature bypass
- CVE-2026-96238: dotnet new install can acquire a template package from a
feed that is not permitted by NuGet Package Source Mapping, bypassing the
configured feed trust boundary.
* SECURITY UPDATE: denial of service
- CVE-2026-96958: Signed XML fixes add input-
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