Access of Uninitialized Pointer in zvbi - CVE-2025-2173

Vulnerability identifier: #VU105976

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-2173

CWE-ID: CWE-824

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to preform a denial of service (DoS) attack.

The vulnerability exists due to access to uninitialized pointer within the vbi_strndup_iconv_ucs2() function in src/conv.c. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

zvbi
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
Desktop Applications Module
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openEuler
libzvbi0t64 (Ubuntu package)
zvbi (Ubuntu package)
libzvbi0 (Ubuntu package)
zvbi-debuginfo
zvbi-debugsource
libzvbi0
zvbi-devel
libzvbi0-debuginfo
zvbi
zvbi-help
zvbi-devel-32bit
zvbi-lang
libzvbi0-32bit
libzvbi0-32bit-debuginfo
libzvbi-chains0-32bit-debuginfo
libzvbi-chains0-32bit
libzvbi-chains0
libzvbi-chains0-debuginfo

Install updates from vendor's website.

zvbi - update to 0.2.44
libzvbi0t64 (Ubuntu package) - addressed in versions Ubuntu Pro, 0.2.42-2ubuntu0.24.10.2
zvbi (Ubuntu package) - addressed in versions Ubuntu Pro, 0.2.42-2ubuntu0.24.10.2
libzvbi0 (Ubuntu package) - update to Ubuntu Pro
zvbi-debuginfo - addressed in versions 0.2.35-3.3.1, 0.2.35-150000.4.3.1
zvbi-debugsource - addressed in versions 0.2.35-3.3.1, 0.2.35-150000.4.3.1
libzvbi0 - addressed in versions 0.2.35-3.3.1, 0.2.35-150000.4.3.1
zvbi-devel - addressed in versions 0.2.35-3.3.1, 0.2.35-150000.4.3.1
libzvbi0-debuginfo - addressed in versions 0.2.35-3.3.1, 0.2.35-150000.4.3.1
zvbi - addressed in versions 0.2.35-9, 0.2.42-4, 0.2.44-1
zvbi-debuginfo - addressed in versions 0.2.35-9, 0.2.42-4, 0.2.44-1
zvbi-debugsource - addressed in versions 0.2.35-9, 0.2.42-4, 0.2.44-1
zvbi-devel - addressed in versions 0.2.35-9, 0.2.42-4, 0.2.44-1
zvbi-help - addressed in versions 0.2.35-9, 0.2.42-4, 0.2.44-1
zvbi-devel-32bit - update to 0.2.35-150000.4.3.1
zvbi-lang - update to 0.2.35-150000.4.3.1
libzvbi0-32bit - update to 0.2.35-150000.4.3.1
libzvbi0-32bit-debuginfo - update to 0.2.35-150000.4.3.1
libzvbi-chains0-32bit-debuginfo - update to 0.2.35-150000.4.3.1
libzvbi-chains0-32bit - update to 0.2.35-150000.4.3.1
libzvbi-chains0 - update to 0.2.35-150000.4.3.1
libzvbi-chains0-debuginfo - update to 0.2.35-150000.4.3.1
zvbi - update to 0.2.35-150000.4.3.1

• https://github.com/zapping-vbi/zvbi/commit/8def647eea27f7fd7ad33ff79c2d6d3e39948dce
• https://github.com/zapping-vbi/zvbi/releases/tag/v0.2.44
• https://github.com/zapping-vbi/zvbi/security/advisories/GHSA-g7cg-7gw9-v8cf
• https://vuldb.com/?ctiid.299202
• https://vuldb.com/?id.299202
• https://vuldb.com/?submit.512798

• Multiple vulnerabilities in zvbi
• Ubuntu update for zvbi
• SUSE update for zvbi
• SUSE update for zvbi
• openEuler 24.03 LTS SP1 update for zvbi
• openEuler 24.03 LTS update for zvbi
• openEuler 22.03 LTS SP4 update for zvbi
• openEuler 20.03 LTS SP4 update for zvbi
• openEuler 22.03 LTS SP3 update for zvbi