PYSEC-2026-1056
Potential double free of buffer during string decoding
At a glance
- Published
- Updated
- CVE
- CVE-2022-31117
- Aliases
- GHSA-fm67-cv37-96ff
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
### Impact _What kind of vulnerability is it? Who is impacted?_ When an error occurs while reallocating the buffer for string decoding, the buffer gets freed twice. Due to how UltraJSON uses the internal decoder, this double free is impossible to trigger from Python. ### Patches _Has the problem been patched? What versions should users upgrade to?_ Users should upgrade to UltraJSON 5.4.0. ### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ There is no workaround. ### For more information If you have any questions or comments about this advisory: * Open an issue in [UltraJSON](http://github.com/ultrajson/ultrajson/issues)
Affected packages
| Package | Versions |
|---|---|
| PyPI · ujson | introduced 0, fixed 5.4.0 |
References
- https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff WEB
- https://nvd.nist.gov/vuln/detail/CVE-2022-31117 ADVISORY
- https://github.com/ultrajson/ultrajson/commit/9c20de0f77b391093967e25d01fb48671104b15b WEB
- https://github.com/ultrajson/ultrajson PACKAGE
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NAU5N4A7EUK2AMUCOLYDD5ARXAJYZBD2 WEB
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OPPU5FZP3LCTXYORFH7NHUMYA5X66IA7 WEB
- https://pypi.org/project/ujson PACKAGE
- https://github.com/advisories/GHSA-fm67-cv37-96ff ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |