[Pkg-clamav-devel] Bug#1123913: clamav-daemon: clamd tries to read /sys/fs/cgroup/system.slice/cpu.max and fails
Ralf Bergs
Ralf+Debian at Bergs.biz
Tue Dec 23 20:50:27 GMT 2025
Package: clamav-daemon
Version: 1.4.3+dfsg-1
Severity: minor
Dear Maintainer,
I'm seeing occasional errors like the below in syslog:
2025-11-22T12:27:24.229084+00:00 myhost kernel: audit: type=1400 audit(1763814444.221:134): apparmor="DENIED" operation="open" class="file" profile="/usr/sbin/clamd" name="/sys/fs/cgroup/system.slice/cpu.max" pid=1282 comm="clamd" requested_mask="r" denied_mask="r" fsuid=112 ouid=0
It seems that the apparmor profile needs to be amended to allow clamd to read this file. It seems to be a minor issue, though, as clamd can continue operating.
Many thanks in advance for looking into this.
Kind regards,
Ralf
-- Package-specific info:
--- configuration ---
Checking configuration files in /etc/clamav
Config file: clamd.conf
-----------------------
AlertExceedsMax disabled
CacheSize = "65536"
PreludeEnable disabled
PreludeAnalyzerName = "ClamAV"
LogFile = "/var/log/clamav/clamav.log"
LogFileUnlock disabled
LogFileMaxSize = "9223372036854775807"
LogTime = "yes"
LogClean disabled
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
ExtendedDetectionInfo = "yes"
PidFile disabled
TemporaryDirectory disabled
DatabaseDirectory = "/var/lib/clamav"
OfficialDatabaseOnly disabled
FailIfCvdOlderThan disabled
LocalSocket = "/var/run/clamav/clamd.ctl"
LocalSocketGroup = "clamav"
LocalSocketMode = "666"
FixStaleSocket = "yes"
TCPSocket disabled
TCPAddr disabled
MaxConnectionQueueLength = "15"
StreamMaxLength = "26214400"
StreamMinPort = "1024"
StreamMaxPort = "2048"
MaxThreads = "12"
ReadTimeout = "180"
CommandReadTimeout = "30"
SendBufTimeout = "200"
MaxQueue = "100"
IdleTimeout = "30"
ExcludePath disabled
MaxDirectoryRecursion = "15"
FollowDirectorySymlinks disabled
FollowFileSymlinks disabled
CrossFilesystems = "yes"
SelfCheck = "3600"
ConcurrentDatabaseReload = "yes"
DisableCache disabled
VirusEvent disabled
ExitOnOOM disabled
AllowAllMatchScan = "yes"
Foreground disabled
Debug disabled
LeaveTemporaryFiles disabled
GenerateMetadataJson disabled
User = "clamav"
Bytecode = "yes"
BytecodeSecurity = "TrustSigned"
BytecodeTimeout = "60000"
BytecodeUnsigned disabled
BytecodeMode = "Auto"
DetectPUA disabled
ExcludePUA disabled
IncludePUA disabled
ScanPE = "yes"
ScanELF = "yes"
ScanMail = "yes"
ScanPartialMessages disabled
PhishingSignatures = "yes"
PhishingScanURLs = "yes"
HeuristicAlerts = "yes"
HeuristicScanPrecedence disabled
StructuredDataDetection disabled
StructuredMinCreditCardCount = "3"
StructuredMinSSNCount = "3"
StructuredSSNFormatNormal = "yes"
StructuredSSNFormatStripped disabled
ScanHTML = "yes"
ScanOLE2 = "yes"
AlertBrokenExecutables disabled
AlertBrokenMedia disabled
AlertEncrypted disabled
StructuredCCOnly disabled
AlertEncryptedArchive disabled
AlertEncryptedDoc disabled
AlertOLE2Macros disabled
AlertPhishingSSLMismatch disabled
AlertPhishingCloak disabled
AlertPartitionIntersection disabled
ScanPDF = "yes"
ScanSWF = "yes"
ScanXMLDOCS = "yes"
ScanHWP3 = "yes"
ScanOneNote = "yes"
ScanArchive = "yes"
ScanImage = "yes"
ScanImageFuzzyHash = "yes"
ForceToDisk disabled
MaxScanTime = "120000"
MaxScanSize = "104857600"
MaxFileSize = "26214400"
MaxRecursion = "16"
MaxFiles = "10000"
MaxEmbeddedPE = "10485760"
MaxHTMLNormalize = "10485760"
MaxHTMLNoTags = "2097152"
MaxScriptNormalize = "5242880"
MaxZipTypeRcg = "1048576"
MaxPartitions = "50"
MaxIconsPE = "100"
MaxRecHWP3 = "16"
PCREMatchLimit = "10000"
PCRERecMatchLimit = "5000"
PCREMaxFileSize = "26214400"
OnAccessMountPath disabled
OnAccessIncludePath disabled
OnAccessExcludePath disabled
OnAccessExcludeRootUID disabled
OnAccessExcludeUID disabled
OnAccessExcludeUname disabled
OnAccessMaxFileSize = "5242880"
OnAccessDisableDDD disabled
OnAccessPrevention disabled
OnAccessExtraScanning disabled
OnAccessCurlTimeout = "5000"
OnAccessMaxThreads = "5"
OnAccessRetryAttempts disabled
OnAccessDenyOnError disabled
DevACOnly disabled
DevACDepth disabled
DevPerformance disabled
DevLiblog disabled
DisableCertCheck disabled
AlgorithmicDetection = "yes"
BlockMax disabled
PhishingAlwaysBlockSSLMismatch disabled
PhishingAlwaysBlockCloak disabled
PartitionIntersection disabled
OLE2BlockMacros disabled
ArchiveBlockEncrypted disabled
Config file: freshclam.conf
---------------------------
LogFileMaxSize = "9223372036854775807"
LogTime = "yes"
LogSyslog disabled
LogFacility = "LOG_LOCAL6"
LogVerbose disabled
LogRotate = "yes"
PidFile disabled
DatabaseDirectory = "/var/lib/clamav"
Foreground disabled
Debug disabled
UpdateLogFile = "/var/log/clamav/freshclam.log"
DatabaseOwner = "clamav"
Checks = "24"
DNSDatabaseInfo = "current.cvd.clamav.net"
DatabaseMirror = "db.local.clamav.net", "database.clamav.net"
PrivateMirror disabled
MaxAttempts = "5"
ScriptedUpdates = "yes"
TestDatabases = "yes"
CompressLocalDatabase disabled
ExtraDatabase disabled
ExcludeDatabase disabled
DatabaseCustomURL disabled
HTTPProxyServer disabled
HTTPProxyPort disabled
HTTPProxyUsername disabled
HTTPProxyPassword disabled
HTTPUserAgent disabled
NotifyClamd = "/etc/clamav/clamd.conf"
OnUpdateExecute disabled
OnErrorExecute disabled
OnOutdatedExecute disabled
LocalIPAddress disabled
ConnectTimeout = "30"
ReceiveTimeout disabled
Bytecode = "yes"
clamav-milter.conf not found
Software settings
-----------------
Version: 1.4.3
Optional features supported: MEMPOOL AUTOIT_EA06 ICONV
Database information
--------------------
Database directory: /var/lib/clamav
bytecode.cld: version 339, sigs: 80, built on Thu Sep 11 12:29:19 2025
main.cld: version 63, sigs: 3287027, built on Tue Dec 16 23:18:22 2025
daily.cld: version 27859, sigs: 354585, built on Tue Dec 23 07:25:59 2025
Total number of signatures: 3641692
Platform information
--------------------
uname: Linux 6.12.57+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.57-1 (2025-11-05) x86_64
OS: Linux, ARCH: x86_64, CPU: x86_64
Full OS version: Debian GNU/Linux 13 (trixie)
zlib version: 1.3.1 (1.3.1), compile flags: a9
platform id: 0x0a21d5d508000000000e0200
Build information
-----------------
GNU C: 14.2.0 (14.2.0)
sizeof(void*) = 8
Engine flevel: 213, dconf: 213
--- data dir ---
total 315916
-rw-r--r-- 1 clamav clamav 1369088 Sep 11 13:05 bytecode.cld
-rw-r--r-- 1 clamav clamav 85770752 Dec 23 08:19 daily.cld
-rw-r--r-- 1 clamav clamav 69 Jun 15 2023 freshclam.dat
-rw-r--r-- 1 clamav clamav 236346880 Dec 17 00:17 main.cld
-- System Information:
Debian Release: 13.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'proposed-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 6.12.57+deb13-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages clamav-daemon depends on:
ii adduser 3.152
ii clamav-base 1.4.3+dfsg-1
ii clamav-freshclam [clamav-data] 1.4.3+dfsg-1
ii debconf [debconf-2.0] 1.5.91
ii dpkg 1.22.21
ii init-system-helpers 1.69~deb13u1
ii libc6 2.41-12
ii libclamav12 1.4.3+dfsg-1
ii libcurl4t64 8.14.1-2+deb13u2
ii libncurses6 6.5+20250216-2
ii libsystemd0 257.9-1~deb13u1
ii libtinfo6 6.5+20250216-2
ii procps 2:4.0.4-9
ii ucf 3.0052
ii zlib1g 1:1.3.dfsg+really1.3.1-1+b1
Versions of packages clamav-daemon recommends:
pn clamdscan <none>
Versions of packages clamav-daemon suggests:
ii apparmor 4.1.0-1
ii clamav-doc 1.4.3+dfsg-1
pn daemon <none>
pn libclamunrar <none>
-- Configuration Files:
/etc/apparmor.d/usr.sbin.clamd changed:
/usr/sbin/clamd {
#include <abstractions/base>
#include <abstractions/nameservice>
#include <abstractions/openssl>
# LP: #433764:
capability dac_override,
# needed, when using systemd
capability setgid,
capability setuid,
capability chown,
@{PROC}/filesystems r,
@{PROC}/[0-9]*/status r,
@{PROC}/[0-9]*/cgroup r,
@{PROC}/[0-9]*/mountinfo r,
/sys/fs/cgroup/system.slice/clamav-daemon.service/cpu.max r,
/etc/clamav/clamd.conf r,
/usr/sbin/clamd mr,
/tmp/ rw,
/tmp/** krw,
/var/lib/clamav/ r,
/var/lib/clamav/** krw,
/var/log/clamav/* krw,
/{,var/}run/clamav/clamd.ctl w,
/{,var/}run/clamav/clamd.pid w,
/var/spool/clamsmtp/* r,
/var/spool/qpsmtpd/* r,
/var/spool/p3scan/children/** r,
/var/spool/havp/** r,
# For amavisd-new integration
/var/lib/amavis/tmp/** r,
# For mimedefang integration
/var/spool/MIMEDefang/mdefang-*/Work/ r,
/var/spool/MIMEDefang/mdefang-*/Work/** r,
# For use with exim
/var/spool/exim4/** r,
# Allow home dir to be scanned
@{HOME}/ r,
@{HOME}/** r,
# Site-specific additions and overrides. See local/README for details.
#include <local/usr.sbin.clamd>
}
/etc/logcheck/ignore.d.paranoid/clamav-daemon [Errno 13] Permission denied: '/etc/logcheck/ignore.d.paranoid/clamav-daemon'
/etc/logcheck/ignore.d.server/clamav-daemon [Errno 13] Permission denied: '/etc/logcheck/ignore.d.server/clamav-daemon'
-- debconf information:
clamav-daemon/DisableCertCheck: false
clamav-daemon/LogSyslog: false
clamav-daemon/AllowAllMatchScan: true
clamav-daemon/LocalSocketMode: 666
clamav-daemon/MaxDirectoryRecursion: 15
clamav-daemon/Bytecode: true
clamav-daemon/MaxEmbeddedPE: 10M
clamav-daemon/ScanArchive: true
clamav-daemon/TCPSocket: 3310
clamav-daemon/ScanMail: true
clamav-daemon/LocalSocketGroup: clamav
clamav-daemon/MaxThreads: 12
clamav-daemon/LogTime: true
clamav-daemon/ForceToDisk: false
clamav-daemon/BytecodeSecurity: TrustSigned
clamav-daemon/FollowFileSymlinks: false
clamav-daemon/FixStaleSocket: true
clamav-daemon/BytecodeTimeout: 60000
clamav-daemon/ScanSWF: true
clamav-daemon/LogFile: /var/log/clamav/clamav.log
clamav-daemon/TcpOrLocal: UNIX
clamav-daemon/ReadTimeout: 180
clamav-daemon/StreamMaxLength: 25
clamav-daemon/FollowDirectorySymlinks: false
clamav-daemon/OnAccessMaxFileSize: 5M
clamav-daemon/LocalSocket: /var/run/clamav/clamd.ctl
clamav-daemon/MaxScriptNormalize: 5M
clamav-daemon/MaxHTMLNoTags: 2M
clamav-daemon/debconf: true
clamav-daemon/MaxZipTypeRcg: 1M
clamav-daemon/User: clamav
clamav-daemon/SelfCheck: 3600
clamav-daemon/MaxHTMLNormalize: 10M
clamav-daemon/LogRotate: true
clamav-daemon/TCPAddr: any
clamav-daemon/MaxConnectionQueueLength: 15
clamav-daemon/AddGroups: Debian-exim
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