What’s Vulnerable › Vulnerabilities

CVE-2022-31620

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-05-25 · updated 2026-06-17
• Weakness: CWE-617

Description

In libjpeg before 1.64, BitStream<false>::Get in bitstream.hpp has an assertion failure that may cause denial of service. This is related to out-of-bounds array access during arithmetically coded lossless scan or arithmetically coded sequential scan.

Affected products

• Libjpeg Project Libjpeg: before 1.64 — fixed in 1.64

How to fix

Upgrade to a fixed version: Libjpeg Project Libjpeg 1.64. Check the vendor advisory for mitigations.

References

• https://github.com/thorfdbg/libjpeg/commit/ef4a29a62ab48b8dc235f4af52cfd6319eda9a6a
• https://github.com/thorfdbg/libjpeg/issues/70
• https://github.com/thorfdbg/libjpeg/commit/ef4a29a62ab48b8dc235f4af52cfd6319eda9a6a
• https://github.com/thorfdbg/libjpeg/issues/70

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