Description
A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources.
For a description of this vulnerability, see the ClamAV blog .
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | Cisco Secure Endpoint | 6.0.9, 6.0.7, 6.1.5, 6.1.7, 6.1.9, 6.2.1, 6.2.5, 6.2.19, 6.2.9, 6.3.5, 6.3.1, 6.3.7, 6.3.3, 7.0.5, 7.1.1, 7.1.5, 1.12.1, 1.12.2, 1.12.5, 1.12.0, 1.12.6, 1.12.3, 1.12.7, 1.12.4, 1.13.0, 1.13.1, 1.13.2, 1.11.0, 1.10.2, 1.10.1, 1.10.0, 1.14.0, 1.6.0, 1.9.0, 1.9.1, 1.8.1, 1.8.0, 1.8.4, 1.7.0, 7.2.13, 7… | — |
| Cisco | Cisco Secure Endpoint Private Cloud Console | N/A | — |
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 | 1.0.2+dfsg-1 | — |
| Debian 13 | clamav | 1.0.2+dfsg-1 | — |
| Debian 12 | clamav | 1.0.2+dfsg-1~deb12u1 | — |
| Debian 10 | clamav | 0.103.9+dfsg-0+deb10u1 | DLA-3544-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | clamav | 0.103.9+dfsg-0ubuntu0.22.04.1 | USN-6303-1 |
| Ubuntu 20.04 LTS | clamav | 0.103.9+dfsg-0ubuntu0.20.04.1 | USN-6303-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | clamav | 0.103.9+dfsg-0ubuntu0.18.04.1+esm1 | USN-6303-2 |
| Ubuntu Pro 16.04 LTS | clamav | 0.103.9+dfsg-0ubuntu0.16.04.1+esm1 | USN-6303-2 |
| Ubuntu Pro 14.04 LTS | clamav | 0.103.9+dfsg-0ubuntu0.14.04.1+esm1 | USN-6303-2 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP6 | clamav | 1.4.2-150600.18.6.1 | SUSE-SU-2025:0327-1 |
| SLES 15 SP5 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SLES 15 SP4 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SLES 15 SP3 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SLES 15 SP2 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
Show 20 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SLES 12 SP5 | clamav | 0.103.9-3.27.1 | SUSE-SU-2025:0328-1, SUSE-SU-2023:3435-1 |
| SLES for SAP 15 SP5 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES for SAP 15 SP4 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLES for SAP 15 SP3 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SLES for SAP 15 SP2 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SLES for SAP 15 SP1 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SLES for SAP 12 SP5 | clamav | 0.103.9-3.27.1 | SUSE-SU-2023:3435-1 |
| 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 | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SLE HPC 15 SP3 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SLE HPC 15 SP2 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SLE HPC 15 SP1 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SUSE Manager Server 4.3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SUSE Manager Server 4.2 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SUSE Manager Proxy 4.3 | clamav | 1.4.2-150200.8.3.1 | SUSE-SU-2025:0325-1 |
| SUSE Manager Proxy 4.2 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| SUSE Enterprise Storage 7.1 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2025:0325-1, SUSE-SU-2023:3456-1 |
| SUSE Enterprise Storage 7 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.103.9-1.1 | openSUSE-SU-2024:13174-1 |
| openSUSE Leap 15.6 | clamav | 1.4.2-150600.18.6.1 | SUSE-SU-2025:0327-1 |
| openSUSE Leap 15.5 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
| openSUSE Leap 15.4 | clamav | 0.103.9-150000.3.47.1 | SUSE-SU-2023:3456-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 1.1.1-r0 | — |
| Alpine v3.23 | clamav | 1.1.1-r0 | — |
| Alpine v3.22 | clamav | 1.1.1-r0 | — |
| Alpine v3.21 | clamav | 1.1.1-r0 | — |
| Alpine v3.20 | clamav | 1.1.1-r0 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | clamav | 1.1.1-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | clamd +8 | 0.103.9-1.amzn2023.0.2 | ALAS2023-2023-331 |
| Amazon Linux 2 | clamd +8 | 0.103.9-1.amzn2.0.2 | ALAS2-2023-2233 |
Advisories 12
- USN-6303-2 clamav vulnerability Ubuntu Security Notices (USN) · Jun 29, 2026
- USN-6303-1 clamav vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-3544-1 clamav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:3456-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:3435-1 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-2025:0328-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-2090 ClamAV & Cisco Secure Endpoint: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 8, 2025
- openSUSE-SU-2024:13174-1 clamav-0.103.9-1.1 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
- ALAS2023-2023-331 Important: clamav security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Sep 7, 2023
- ALAS2-2023-2233 Important: clamav security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Sep 7, 2023