libzvbi up to 0.2.45 Teletext decoder convert_drcs out-of-bounds write

Summaryinfo

A vulnerability classified as problematic has been found in libzvbi up to 0.2.45. Affected is the function convert_drcs of the component Teletext decoder. The manipulation leads to out-of-bounds write. This vulnerability is uniquely identified as CVE-2026-110654. Local access is required to approach this attack. No exploit exists.

Detailsinfo

A vulnerability was found in libzvbi up to 0.2.45. It has been rated as problematic. This issue affects the function convert_drcs of the component Teletext decoder. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is integrity, and availability. The summary by CVE is:

libzvbi through 0.2.45 contains an out-of-bounds write vulnerability in the Teletext decoder that allows attackers to corrupt memory by supplying unvalidated DRCS pixel-mode values in X/28/3 packets. Attackers can send a crafted Teletext stream decoded via vbi_decode with every slot set to DRCS_MODE_6_5_4, causing convert_drcs to overflow chars[48][60] and crash the application.

The advisory is shared at hackmd.io. The identification of this vulnerability is CVE-2026-110654 since 10/14/2026. The exploitation is known to be easy. An attack has to be approached locally. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• libzvbi

Version

• 0.2.0
• 0.2.1
• 0.2.2
• 0.2.3
• 0.2.4
• 0.2.5
• 0.2.6
• 0.2.7
• 0.2.8
• 0.2.9
• 0.2.10
• 0.2.11
• 0.2.12
• 0.2.13
• 0.2.14
• 0.2.15
• 0.2.16
• 0.2.17
• 0.2.18
• 0.2.19
• 0.2.20
• 0.2.21
• 0.2.22
• 0.2.23
• 0.2.24
• 0.2.25
• 0.2.26
• 0.2.27
• 0.2.28
• 0.2.29
• 0.2.30
• 0.2.31
• 0.2.32
• 0.2.33
• 0.2.34
• 0.2.35
• 0.2.36
• 0.2.37
• 0.2.38
• 0.2.39
• 0.2.40
• 0.2.41
• 0.2.42
• 0.2.43
• 0.2.44
• 0.2.45

CPE 2.3info

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CPE 2.2info

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Entryinfo

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