A mutt security update has been released for Debian GNU/Linux 11 and 12 to address several NULL pointer dereference flaws.

[SECURITY] [DSA 5494-1] mutt security update

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Debian Security Advisory DSA-5494-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
September 10, 2023 https://www.debian.org/security/faq
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Package : mutt
CVE ID : CVE-2023-4874 CVE-2023-4875
Debian Bug : 1051563

Several NULL pointer dereference flaws were discovered in Mutt, a
text-based mailreader supporting MIME, GPG, PGP and threading, which may
result in denial of service (application crash) when viewing a specially
crafted email or when composing from a specially crafted draft message.

For the oldstable distribution (bullseye), these problems have been fixed
in version 2.0.5-4.1+deb11u3.

For the stable distribution (bookworm), these problems have been fixed in
version 2.2.9-1+deb12u1.

We recommend that you upgrade your mutt packages.

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

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/