Bug 2496742 - CVE-2026-20216 clamav: ClamAV: Denial of Service via crafted InstallShield file [epel-all]
Summary: CVE-2026-20216 clamav: ClamAV: Denial of Service via crafted InstallShield fi...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: clamav
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Orion Poplawski
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["3b974f69-b5c5-42d3-8211-8...
Depends On:
Blocks: CVE-2026-20216
TreeView+ depends on / blocked
 
Reported: 2026-07-03 06:01 UTC by Srikanth Balasubramanian
Modified: 2026-08-19 00:26 UTC (History)
12 users (show)

Fixed In Version: clamav-1.4.6-1.fc44 clamav-1.4.6-1.el9 clamav-1.4.6-1.el8 clamav-1.4.6-1.fc43 clamav-1.4.6-1.el10_3
Clone Of:
Environment:
Last Closed: 2026-08-12 00:47:53 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Srikanth Balasubramanian 2026-07-03 06:01:12 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

A vulnerability in the InstallShield file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition on an affected device.

This vulnerability is due to improper handling of temporary resources during file scanning. An attacker could exploit this vulnerability by submitting a crafted InstallShield file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process and temporarily consume available system resources, resulting in a DoS condition on the affected software.

Comment 1 Fedora Update System 2026-08-10 15:57:47 UTC
FEDORA-2026-ecf6fe868f (clamav-1.4.6-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-ecf6fe868f

Comment 2 Fedora Update System 2026-08-11 01:20:45 UTC
FEDORA-EPEL-2026-b873ec0e0b has been pushed to the Fedora EPEL 10.3 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-b873ec0e0b

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2026-08-11 01:27:59 UTC
FEDORA-EPEL-2026-e14bc659f0 has been pushed to the Fedora EPEL 9 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-e14bc659f0

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2026-08-11 03:16:42 UTC
FEDORA-EPEL-2026-3432a047a4 has been pushed to the Fedora EPEL 8 testing repository.

You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-3432a047a4

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2026-08-11 03:38:03 UTC
FEDORA-2026-ecf6fe868f has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-ecf6fe868f`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-ecf6fe868f

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2026-08-11 03:57:08 UTC
FEDORA-2026-a9beec8485 has been pushed to the Fedora 43 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-a9beec8485`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-a9beec8485

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 7 Fedora Update System 2026-08-12 00:47:53 UTC
FEDORA-2026-ecf6fe868f (clamav-1.4.6-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 8 Fedora Update System 2026-08-12 00:58:11 UTC
FEDORA-EPEL-2026-e14bc659f0 (clamav-1.4.6-1.el9) has been pushed to the Fedora EPEL 9 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 9 Fedora Update System 2026-08-12 00:58:21 UTC
FEDORA-EPEL-2026-3432a047a4 (clamav-1.4.6-1.el8) has been pushed to the Fedora EPEL 8 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 10 Fedora Update System 2026-08-12 01:10:45 UTC
FEDORA-2026-a9beec8485 (clamav-1.4.6-1.fc43) has been pushed to the Fedora 43 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 11 Fedora Update System 2026-08-19 00:26:15 UTC
FEDORA-EPEL-2026-b873ec0e0b (clamav-1.4.6-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.


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