LibRaw up to 0.22.0 JPEG DHT Parser losslessjpeg.cpp HuffTable::initval bits[] out-of-bounds write

Summaryinfo

A vulnerability, which was classified as critical, was found in LibRaw up to 0.22.0. Affected is the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. Such manipulation of the argument bits[] leads to out-of-bounds write. This vulnerability is referenced as CVE-2026-5318. It is possible to launch the attack remotely. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in LibRaw up to 0.22.0 and classified as problematic. Affected by this issue is the function HuffTable::initval of the file src/decompressors/losslessjpeg.cpp of the component JPEG DHT Parser. The manipulation of the argument bits[] 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 availability.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-5318. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 0.22.1 eliminates this vulnerability. Applying the patch a6734e867b19d75367c05f872ac26322464e3995 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202604-466) and EUVD (EUVD-2026-18116). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Image Processing Software

Name

• LibRaw

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22.0

License

• open-source

Website

• Product: https://github.com/LibRaw/LibRaw/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Submitinfo

Accepted

• Submit #780538: LibRaw 0.22.0 Out-of-bounds Write (by biniam)

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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