clamav-daemon fails after update

[Wolf Rogner]

After upgrading from clamav-daemon 0.98.6 to 0.98.7 the daemon cannot be started. Terminates with
Segmentation fault (core dumped)

the log shows:
Thu May 7 21:47:42 2015 -> +++ Started at Thu May 7 21:47:42 2015
Thu May 7 21:47:42 2015 -> clamd daemon 0.98.7 (OS: linux-gnu, ARCH: x86_64, CPU: x86_64)
Thu May 7 21:47:42 2015 -> Log file size limited to 4294967295 bytes.
Thu May 7 21:47:42 2015 -> Reading databases from /var/lib/clamav
Thu May 7 21:47:42 2015 -> Not loading PUA signatures.
Thu May 7 21:47:42 2015 -> Bytecode: Security mode set to "TrustSigned".
Thu May 7 21:47:47 2015 -> Loaded 3802690 signatures.

then it terminates.
Segmentation fault (core dumped)

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: clamav-daemon 0.98.7+dfsg-0ubuntu0.12.04.1
ProcVersionSignature: Ubuntu 3.2.0-83.120-generic 3.2.68
Uname: Linux 3.2.0-83-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.8
Architecture: amd64
Date: Thu May 7 21:42:32 2015
InstallationMedia: Ubuntu-Server 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
MarkForUpload: True
SourcePackage: clamav
UpgradeStatus: Upgraded to precise on 2012-05-01 (1101 days ago)

[Scott Kitterman (kitterman)]

I'm unable to replicate this. Are you using any third-party signatures? If so, does the problem happen when you remove them?

[Wolf Rogner (war-rsb)]

No, installed clamav as part of amavis.

update of signatures happens via freshclam.

I circumvent this by reinstalling libclamav6. But I doubt that installing this library regularly after every upgrade should be a solution.

usually happens after an update of clamav or the kernel.

I also suspected the disk to be the cause. Negative. Thorough scans demonstrate no errors on the disk.
I use LVM. Maybe the lvm corrupts the library. But then: Why only parts of clam?

I checked for a sign that the server is compromised (or partly compromised). Negative (to my best understanding). No signs of network access from outside (used an independent network based IDS on my NAS).

So I think (unless you inform me to the better), that the issue lies within clamav-daemon and the libclamav6.

[Launchpad Janitor (janitor)]

[Expired for clamav (Ubuntu) because there has been no activity for 60 days.]