GHSA-9HJ4-R449-HFVC Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Summary Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls...

Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Summary Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls...

Use After Free

Overview json is a JSON implementation as a Ruby extension in C. Affected versions of this package are vulnerable to Use After Free through JSON::ResumableParserpartialvalue in ext/json/ext/parser/parser.c. An attacker can crash the Ruby process by supplying truncated streaming JSON with duplicat...

CVE-2026-71847

Ruby JSON: ResumableParser in the native C extension (Ruby JSON) from versions 2.20.0–2.21.2 allocates correctly but after consuming input, state.start/state.cursor/state.end point into freed storage. When partial_value processes a truncated object with duplicate keys, cursor_position dereference...

CVE-2026-71847 Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

EUVD-2026-54576

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

CVE-2026-71847

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

CVE-2026-71847 Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

CVE-2026-71847 Ruby JSON: JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

CVE-2026-71847

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

SUSE CVE-2026-54619

sqlite3 provides Ruby bindings for the SQLite3 embedded database. In version 2.9.4 and earlier, redefining a SQLite function with a different arity frees the previously registered function handler while SQLite may still reference it, resulting in a use-after-free. This issue is fixed in version...

MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure

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PT-2026-69102

Name of the Vulnerable Software and Affected Versions Ruby JSON versions 2.20.0 through 2.21.1 Description Ruby's JSON native C extension contains a heap-use-after-free issue. The JSON::ResumableParser clears its input buffer but fails to reset the state.start, state.cursor, and state.end pointer...

CVE-2026-71847: Use After Free

Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object...

PT-2026-69159

Name of the Vulnerable Software and Affected Versions Ruby LSP VS Code extension versions prior to 0.10.4 Description Workspace-level settings in the extension can be manipulated via a .vscode/settings.json file in a malicious repository. An attacker can override the path to the Ruby executable,...

CVE-2026-48122: Improper Neutralization of Special Elements used in an OS Command

Ruby LSP is an implementation of the language server protocol for Ruby. Several workspace-level settings in the Ruby LSP VS Code extension prior to version 0.10.4 could override the path to the Ruby executable, the version manager executables, or the Bundler Gemfile used at startup. A malicious...

Ruby oj Gem < 3.17.2 Stack Buffer Overflow

The version of the oj Ruby gem installed on the remote host is prior to 3.17.2. It is, therefore, affected by a stack buffer overflow vulnerability. - Oj.dump is vulnerable to a stack-based buffer overflow when a large :indent value is provided by the developer. fillindent in dump.h calls...

Ruby JSON - JSON::ResumableParser#partial_value dereferences a freed input buffer and crashes on truncated duplicate-key streams

Summary Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but leaves state.start, state.cursor, and state.end pointing into released storage. When partialvalue reconstructs an incomplete object containing duplicate keys, the duplicate-key warning path calls...

Linux Distros Unpatched Vulnerability : CVE-2026-71847

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Ruby JSON is a JSON implementation for Ruby. From 2.20.0 until 2.21.2, Ruby's JSON native C extension clears the consumed JSON::ResumableParser input buffer but...

ruby:3.3 security, bug fix, and enhancement update

ruby 3.3.12-8 - Upgrade to Ruby 3.3.12. Resolves: RHEL-171335 Resolves: RHEL-193665 rubygem-mysql2 0.5.5-3 - Disable tests on the 32bit platforms ix86. Related: RHEL-80222 0.5.5-2 - Adapt tests to openssl 3.2 Resolves: RHEL-80222 0.5.5-1 - Upgrade to mysql2 0.5.5. Related: RHEL-17089 rubygem-pg...