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Debian Security Advisory DSA-5266-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
October 30, 2022                      https://www.debian.org/security/faq
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Package        : expat
CVE ID         : CVE-2022-43680
Debian Bug     : 1022743

A heap use-after-free vulnerability after overeager destruction of a
shared DTD in the XML_ExternalEntityParserCreate function in Expat, an
XML parsing C library, may result in denial of service or potentially
the execution of arbitrary code.

For the stable distribution (bullseye), this problem has been fixed in
version 2.2.10-2+deb11u5.

We recommend that you upgrade your expat packages.

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

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/

Mailing list: debian-security-announce@lists.debian.org
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