Debian Security Advisory

DSA-4992-1 php7.4 -- security update

Date Reported:
25 Oct 2021
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 997003.
In Mitre's CVE dictionary: CVE-2021-21703.
More information:

An out-of-bounds read and write flaw was discovered in the PHP-FPM code, which could result in escalation of privileges from local unprivileged user to the root user.

For the stable distribution (bullseye), this problem has been fixed in version 7.4.25-1+deb11u1.

We recommend that you upgrade your php7.4 packages.

For the detailed security status of php7.4 please refer to its security tracker page at: