SUSE-SU-2026:0906-1: moderate: Security update for clamav

[SLE-SECURITY-UPDATES]

# Security update for clamav

Announcement ID: SUSE-SU-2026:0906-1  
Release Date: 2026-03-17T16:32:20Z  
Rating: moderate  
References:

  * bsc#1221954
  * bsc#1258072
  * bsc#1259207
  * jsc#PED-14819

  
Cross-References:

  * CVE-2026-20031

  
CVSS scores:

  * CVE-2026-20031 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-20031 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-20031 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * openSUSE Leap 15.4

  
  
An update that solves one vulnerability, contains one feature and has two
security fixes can now be installed.

## Description:

This update for clamav fixes the following issues:

Update to clamav 1.5.2:

Security issue:

  * CVE-2026-20031: improper error handling in the HTML CSS module when
    splitting UTF-8 strings can lead to denial of service conditions via a
    crafted HTML file (bsc#1259207).

Non security issue:

  * Support transactional updates (jsc#PED-14819).

Changelog:

  * Fixed a possible infinite loop when scanning some JPEG files by upgrading
    affected ClamAV dependency, a Rust image library.
  * The CVD verification process will now ignore certificate files in the CVD
    certs directory when the user lacks read permissions.
  * Freshclam: Fix CLD verification bug with PrivateMirror option.
  * Upgraded the Rust bytes dependency to a newer version to resolve
    RUSTSEC-2026-0007 advisory.
  * Fixed a possible crash caused by invalid pointer alignment on some
    platforms.
  * Minimal required Rust version is now 1.87.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-906=1

## Package List:

  * openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64)
    * libclammspack0-1.5.2-150400.13.5.1
    * clamav-debuginfo-1.5.2-150400.13.5.1
    * libclamav12-debuginfo-1.5.2-150400.13.5.1
    * libfreshclam4-debuginfo-1.5.2-150400.13.5.1
    * clamav-milter-1.5.2-150400.13.5.1
    * libclamav12-1.5.2-150400.13.5.1
    * libfreshclam4-1.5.2-150400.13.5.1
    * clamav-debugsource-1.5.2-150400.13.5.1
    * libclammspack0-debuginfo-1.5.2-150400.13.5.1
    * clamav-milter-debuginfo-1.5.2-150400.13.5.1
    * clamav-1.5.2-150400.13.5.1
    * clamav-devel-1.5.2-150400.13.5.1
  * openSUSE Leap 15.4 (noarch)
    * clamav-docs-html-1.5.2-150400.13.5.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-20031.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1221954
  * https://bugzilla.suse.com/show_bug.cgi?id=1258072
  * https://bugzilla.suse.com/show_bug.cgi?id=1259207
  * https://jira.suse.com/browse/PED-14819

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