There is an out-of-bounds write in checkType located in etc.c in w3m 0.5.3. It can be triggered by sending a crafted HTML file to the w3m binary. It allows an attacker to cause Denial of Service or possibly have unspecified other impact.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade w3m | Aug 22, 2024 | Aug 15, 2022 |
| Debian | — | Upgrade w3m | Aug 28, 2023 | Aug 15, 2022 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Aug 15, 2022 |
| Suse | — | Upgrade w3mUpgrade w3m-inline-image | Jan 12, 2023 | Aug 15, 2022 |
| Ubuntu | — | Upgrade w3mUpgrade w3m (Ubuntu Pro) | Jan 10, 2023 | Aug 15, 2022 |
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