CVE-2026-54522

MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.2, MessagePack::Bufferclear in ext/msgpack/buffer.c leaves rmemlast, rmemend, and rmemowner stale after msgpackbuffershiftchunk returns an rmem page to the shared pool, allowing a subsequent...

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

Summary MessagePack::Bufferclear shifts out every chunk and returns its 4 KiB rmem page to the shared pool, but does not reset the buffer's rmem cursor rmemlast, rmemend, rmemowner. The next write sees "unused rmem space" left over from the freed page and hands back a slice of memory that has...

CVE-2026-54522

CVE-2026-54522 affects MessagePack for Ruby prior to 1.8.2. The vulnerability lies in MessagePack::Buffer#clear in ext/msgpack/buffer.c, which leaves rmem_last, rmem_end, and rmem_owner stale after _msgpack_buffer_shift_chunk returns an rmem page to the shared pool. A subsequent Buffer#write by a...

CVE-2026-54522 MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure

MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.2, MessagePack::Bufferclear in ext/msgpack/buffer.c leaves rmemlast, rmemend, and rmemowner stale after msgpackbuffershiftchunk returns an rmem page to the shared pool, allowing a subsequent...

DFVULN-839 - Use-After-Free in MessagePack::Buffer#clear Enables Cross-Buffer Disclosure

Summary MessagePack::Bufferclear shifts out every chunk and returns its 4 KiB rmem page to the shared pool, but does not reset the buffer's rmem cursor rmemlast, rmemend, rmemowner. The next write sees "unused rmem space" left over from the freed page and hands back a slice of memory that has...

Silicon Labs Gecko SDK 安全漏洞

The Silicon Labs Gecko SDK GSDK is an open source library from Silicon Labs. Combines the Silicon Labs Wireless Software Development Kit SDK and the Gecko platform into one integrated package. A security vulnerability exists in Silicon Labs Gecko SDK 4.2.1 and prior versions, which stems from a...

Silicon Labs Gecko SDK 安全漏洞

The Silicon Labs Gecko SDK GSDK is an open source library from Silicon Labs. Combines the Silicon Labs Wireless Software Development Kit SDK and the Gecko platform into one integrated package. A security vulnerability exists in Silicon Labs Gecko SDK 4.2.1 and prior versions, which stems from a...

Silicon Labs Gecko SDK 安全漏洞

The Silicon Labs Gecko SDK GSDK is an open source library from Silicon Labs. Combines the Silicon Labs Wireless Software Development Kit SDK and the Gecko platform into one integrated package. A security vulnerability exists in Silicon Labs Gecko SDK v4.2.1 and earlier versions, which stems from...

Kernel: KVM: export MSR_IA32_TSX_CTRL to guest - incomplete fix for TAA (CVE-2019-11135)

A flaw was found in the fix for CVE-2019-11135, the way Intel CPUs handle speculative execution of instructions when a TSX Asynchronous Abort TAA error occurs. When a guest is running on a host CPU affected by the TAA flaw TAANO=0, but is not affected by the MDS issue MDSNO=1, the guest was to...

CVE-2006-4813

The blockpreparewrite function in fs/buffer.c for Linux kernel 2.6.x before 2.6.13 does not properly clear buffers during certain error conditions, which allows local users to read portions of files that have been unlinked...