AZL-109539
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109539.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-109539
- Upstream
- Published
- 2026-07-30T17:16:33Z
- Modified
- 2026-10-27T05:36:16Z
- Summary
- CVE-2026-54522 affecting package python-msgpack 1.0.5-3
- Details
-
MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.2, MessagePack::Buffer#clear in ext/msgpack/buffer.c leaves rmem_last, rmem_end, and rmem_owner stale after _msgpack_buffer_shift_chunk returns an rmem page to the shared pool, allowing a subsequent Buffer#write and a second MessagePack::Buffer to alias the page and disclose or corrupt cross-buffer data. This issue is fixed in version 1.8.2.
- References