On January 26, 2018 ClamAV released a problematic daily.cvd file.
Sentry instances that automatically applied this daily.cvd file via the ClamAV automatic update process may experience error messages similar to the following upon AV scanning request or response payloads:
35A00 - Clam AV virus scanning incoming document of size 8 bytes
3531A - Clam AV daemon responds: /mnt/ramdisk/clam39253086.tmp: Can't create new file ERROR
0E050 - Error virus scanning, blocking content
ClamAV has released a new daily.cvd that resolves the problem.
Take the following steps to resolve AV scanning issues in Forum Sentry caused by the daily update on January 26, 2018:
1. If you can't update the definitions immediately, first try disabling / enabling AV - this has been shown to resolve the problem immediately albeit only for a period of time, the issue will come back. This is a temporary fix only.
2. Update the definitions and ensure you have Daily file version: 24258 or newer.
For more information see: