DEBIAN-CVE-2026-64847
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-64847
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-64847.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-64847
- Upstream
- Published
- 2026-09-18T18:17:10Z
- Modified
- 2026-09-20T20:00:10Z
- Severity
-
- 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
- Summary
- [none]
- Details
-
AnyIO is a high level asynchronous concurrency and networking framework that works on top of either Trio or asyncio. Prior to 4.14.2, AnyIO starts process-pool workers with standard error connected to a pipe that the parent never drains, even though the documented behavior redirects all three standard streams. Worker code that writes enough attacker-influenced data to sys.stderr can fill the pipe and block before returning the standard-output protocol response, causing the awaiting process-pool call to remain blocked indefinitely. Applications that run untrusted or faulty worker code capable of producing substantial standard-error output are affected. This issue is fixed in version 4.14.2.
- References
Affected packages
Debian:12 / python-anyio
Package
- Name
- python-anyio
- Purl
- pkg:deb/debian/python-anyio?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / python-anyio
Package
- Name
- python-anyio
- Purl
- pkg:deb/debian/python-anyio?arch=source&distro=trixie
Debian:14 / python-anyio
Package
- Name
- python-anyio
- Purl
- pkg:deb/debian/python-anyio?arch=source&distro=forky