CVE-2025-4565

Publication date 16 June 2025

Last updated 9 July 2025

Ubuntu priority

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashing the application with a RecursionError. We recommend upgrading to version =>6.31.1 or beyond commit 17838beda2943d08b8a9d4df5b68f5f04f26d901

Status

Show unmaintained releases

Package	Ubuntu Release	Status
protobuf	25.04 plucky	Fixed 3.21.12-10ubuntu0.1
	24.10 oracular	Ignored end of life
	24.04 LTS noble	Fixed 3.21.12-8.2ubuntu0.2
	22.04 LTS jammy	Fixed 3.12.4-1ubuntu7.22.04.4
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Vulnerable

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
protobuf	Upstream: 17838be

CVE-2025-4565

Status

Patch details

References

Related Ubuntu Security Notices (USN)

Other references