Description
A vulnerability in the ClamD service module of Clam AntiVirus (ClamAV) versions 1.4.0, 1.3.2 and prior versions, all 1.2.x versions, 1.0.6 and prior versions, all 0.105.x versions, all 0.104.x versions, and 0.103.11 and all prior versions could allow an authenticated, local attacker to corrupt critical system files.
The vulnerability is due to allowing the ClamD process to write to its log file while privileged without checking if the logfile has been replaced with a symbolic link. An attacker could exploit this vulnerability if they replace the ClamD log file with a symlink to a critical system file and then find a way to restart the ClamD process. An exploit could allow the attacker to corrupt a critical system file by appending ClamD log messages after restart.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | ClamAV | 1.4.0, 1.3.2, 1.0.6, 1.0.5, 1.0.4, 1.0.3, 1.0.2, 1.0.1, 1.0.0, 1.2.x, 0.105.x, 0.104.x, 0.103.11, 0.103.10, 0.103.9, 0.103.8, 0.103.7, 0.103.6, 0.103.5, 0.103.4, 0.103.3, 0.103.2, 0.103.1, 0.103.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | clamav | 1.4.1+dfsg-1 | — |
| Debian 13 | clamav | 1.4.1+dfsg-1 | — |
| Debian 12 | clamav | 1.0.7+dfsg-1~deb12u1 | — |
| Debian 11 | clamav | 1.0.7+dfsg-1~deb11u1 | DLA-3983-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | clamav | 1.0.7+dfsg-0ubuntu0.24.04.1 | USN-7011-1 |
| Ubuntu 22.04 LTS | clamav | 0.103.12+dfsg-0ubuntu0.22.04.1 | USN-7011-1 |
| Ubuntu 20.04 LTS | clamav | 0.103.12+dfsg-0ubuntu0.20.04.1 | USN-7011-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | clamav | 0.103.12+dfsg-0ubuntu0.18.04.1+esm1 | USN-7011-2 |
| Ubuntu Pro 16.04 LTS | clamav | 0.103.12+dfsg-0ubuntu0.16.04.1+esm1 | USN-7011-2 |
| Ubuntu Pro 14.04 LTS | clamav | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | clamav | 0.103.12-150600.18.3.1 | SUSE-SU-2025:0327-1, SUSE-SU-2024:3306-1 |
| SLES 15 SP5 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLES 15 SP4 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLES 15 SP3 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLES 15 SP2 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2024:3305-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | clamav | 0.103.12-3.33.1 | SUSE-SU-2025:0328-1, SUSE-SU-2024:3228-1 |
| SLES for SAP 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES for SAP 15 SP4 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLES for SAP 15 SP3 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLES for SAP 15 SP2 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2024:3305-1 |
| SLES for SAP 12 SP5 | clamav | 0.103.12-3.33.1 | SUSE-SU-2024:3228-1 |
| SLE Micro 5.5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP4 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLE HPC 15 SP3 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SLE HPC 15 SP2 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2024:3305-1 |
| SUSE Manager Server 4.3 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SUSE Manager Proxy 4.3 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
| SUSE Enterprise Storage 7.1 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2025:0325-1, SUSE-SU-2024:3305-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 1.4.1-1.1 | openSUSE-SU-2024:14596-1 |
| openSUSE Leap 15.6 | clamav | 0.103.12-150600.18.3.1 | SUSE-SU-2025:0327-1, SUSE-SU-2024:3306-1 |
| openSUSE Leap 15.5 | clamav | 0.103.12-150000.3.53.1 | SUSE-SU-2024:3305-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 1.3.2-r0 | — |
| Alpine v3.23 | clamav | 1.3.2-r0 | — |
| Alpine v3.22 | clamav | 1.3.2-r0 | — |
| Alpine v3.21 | clamav | 1.3.2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | clamd +8 | 0.103.12-1.amzn2023.0.1 | ALAS2023-2024-737 |
| Amazon Linux 2 | clamd +8 | 0.103.12-1.amzn2.0.1 | ALAS2-2024-2644 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | clamav | 1.0.7-1 | — |
| Azure Linux 2 (CBL-Mariner) | clamav | 1.0.7-1 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | clamav-1.4 | 1.4.1-r0 | — |
Advisories 13
- USN-7011-2 clamav vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-7011-1 clamav vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DLA-3983-1 clamav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2024:3228-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0325-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3305-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2024:3306-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:0328-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2024-2051 ClamAV: Mehrere Schwachstellen ermöglichen Denial of Service und Dateimanipulation BSI CERT-Bund (WID) · Jul 8, 2025
- openSUSE-SU-2024:14596-1 clamav-1.4.1-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2025:0327-1 Security update for clamav SUSE / openSUSE Security Updates · May 2, 2025
- ALAS2023-2024-737 Moderate: clamav security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 14, 2024
- ALAS2-2024-2644 Moderate: clamav security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 2, 2024