Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-71575.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-71575
Upstream
Published
2025-12-04T19:16:05Z
Modified
2026-04-01T05:22:04.560938Z
Summary
CVE-2025-65637 affecting package flannel for versions less than 0.14.0-27
Details

A denial-of-service vulnerability exists in github.com/sirupsen/logrus when using Entry.Writer() to log a single-line payload larger than 64KB without newline characters. Due to limitations in the internal bufio.Scanner, the read fails with "token too long" and the writer pipe is closed, leaving Writer() unusable and causing application unavailability (DoS). This affects versions < 1.8.3, 1.9.0, and 1.9.2. The issue is fixed in 1.8.3, 1.9.1, and 1.9.3+, where the input is chunked and the writer continues to function even if an error is logged.

References

Affected packages

Azure Linux:2 / flannel

Package

Name
flannel
Purl
pkg:rpm/azure-linux/flannel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.14.0-27

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-71575.json"