Updated runc packages are now available for both Debian GNU/Linux 11 and 12, with the purpose of addressing a security flaw that could lead to multiple container breakouts as a consequence of an internal file descriptor leak:

[DSA 5615-1] runc security update

[DSA 5615-1] runc security update

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Debian Security Advisory DSA-5615-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
February 04, 2024 https://www.debian.org/security/faq
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Package : runc
CVE ID : CVE-2024-21626

It was discovered that runc, a command line client for running
applications packaged according to the Open Container Format (OCF), was
suspectible to multiple container breakouts due to an internal file
descriptor leak.

For the oldstable distribution (bullseye), this problem has been fixed
in version 1.0.0~rc93+ds1-5+deb11u3.

For the stable distribution (bookworm), this problem has been fixed in
version 1.1.5+ds1-1+deb12u1.

We recommend that you upgrade your runc packages.

For the detailed security status of runc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/runc

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/