Hi,
The following vulnerability was published for php8.1.
CVE-2021-21708[0]:
| In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x
| below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT
| filter and min/max limits, if the filter fails, there is a possibility
| to trigger use of allocated memory after free, which can result it
| crashes, and potentially in overwrite of other memory chunks and RCE.
| This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max
| limits.
If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.
For further information see:
[0] https://security-tracker.debian.org/tracker/CVE-2021-21708
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21708
[1] https://bugs.php.net/81708
Regards,
Salvatore