Description
A vulnerability in the Portable Document Format (PDF) scanning functionality of Clam AntiVirus (ClamAV) Software versions 0.101.1 and prior could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to a lack of proper data handling mechanisms within the device buffer while indexing remaining file data on an affected device. An attacker could exploit this vulnerability by sending crafted PDF files to an affected device. A successful exploit could allow the attacker to cause a heap buffer out-of-bounds read condition, resulting in a crash that could result in a denial of service condition on an affected device.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Cisco | ClamAV | 0.101.1 | — |
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 | 0.101.2+dfsg-1 | — |
| Debian 13 | clamav | 0.101.2+dfsg-1 | — |
| Debian 12 | clamav | 0.101.2+dfsg-1 | — |
| Debian 8 | clamav | 0.100.3+dfsg-0+deb8u1 | DLA-1759-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | clamav | 0.100.3+dfsg-0ubuntu0.18.04.1 | USN-3940-1 |
| Ubuntu 16.04 LTS | clamav | 0.100.3+dfsg-0ubuntu0.16.04.1 | USN-3940-1 |
| Ubuntu 14.04 LTS | clamav | 0.100.3+dfsg-0ubuntu0.14.04.1 | USN-3940-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | clamav | 0.103.0-3.23.1 | SUSE-SU-2020:3790-1 |
| SLES 15 SP1 | clamav | 0.103.0-3.23.1 | SUSE-SU-2020:3790-1 |
| SLES 15 | clamav | 0.100.3-3.9.1 | SUSE-SU-2019:0861-1 |
| SLES 12 SP4 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES 12 SP3 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES 12 SP1 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES 12 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES 11 SP4 | clamav | 0.100.3-0.20.21.1 | SUSE-SU-2019:14015-1 |
| SLES for SAP 12 SP4 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES for SAP 12 SP3 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES for SAP 12 SP2 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SLES for SAP 12 SP1 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SUSE OpenStack Cloud 7 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | clamav | 0.100.3-0.20.21.1 | SUSE-SU-2019:14015-1 |
| SUSE Enterprise Storage 4 | clamav | 0.100.3-33.21.1 | SUSE-SU-2019:0897-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | clamav | 0.103.3-1.4 | openSUSE-SU-2024:10685-1 |
| openSUSE Leap 15.2 | clamav | 0.103.0-lp152.6.3.1 | openSUSE-SU-2020:2276-1 |
| openSUSE Leap 15.1 | clamav | 0.103.0-lp151.2.12.1 | openSUSE-SU-2020:2268-1 |
| openSUSE Leap 15.0 | clamav | 0.100.3-lp150.2.10.1 | openSUSE-SU-2019:1210-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | clamav | 0.100.3-r0 | — |
| Alpine v3.23 | clamav | 0.100.3-r0 | — |
| Alpine v3.22 | clamav | 0.100.3-r0 | — |
| Alpine v3.21 | clamav | 0.100.3-r0 | — |
| Alpine v3.20 | clamav | 0.100.3-r0 | — |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | clamav | 0.100.3-r0 | — |
| Alpine v3.18 | clamav | 0.100.3-r0 | — |
| Alpine v3.17 | clamav | 0.100.3-r0 | — |
| Alpine v3.16 | clamav | 0.100.3-r0 | — |
| Alpine v3.15 | clamav | 0.100.3-r0 | — |
| Alpine v3.14 | clamav | 0.100.3-r0 | — |
| Alpine v3.13 | clamav | 0.100.3-r0 | — |
| Alpine v3.12 | clamav | 0.100.3-r0 | — |
| Alpine v3.11 | clamav | 0.100.3-r0 | — |
| Alpine v3.10 | clamav | 0.100.3-r0 | — |
| Alpine v3.9 | clamav | 0.100.3-r0 | — |
| Alpine v3.8 | clamav | 0.100.3-r0 | — |
| Alpine v3.7 | clamav | 0.100.3-r0 | — |
| Alpine v3.6 | clamav | 0.100.3-r0 | — |
Advisories 10
- USN-3940-1 clamav vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DLA-1759-1 clamav - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2020:2276-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2268-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3790-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10685-1 clamav-0.103.3-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0861-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1210-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0897-1 Security update for clamav SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:14015-1 Security update for clamav SUSE / openSUSE Security Updates · May 2, 2025
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12181
- GLSA-201904-12 vendor-advisory
- openSUSE-SU-2019:1208 vendor-advisory
- openSUSE-SU-2019:1210 vendor-advisory
- [debian-lts-announce] 20190422 [SECURITY] [DLA 1759-1] clamav security update mailing-list