Expat: Denial of Service

Expat: Denial of Service A vulnerability has been found in Expat which could result in denial of service. expat 2022-10-31 2022-10-31 878271 remote 2.5.0 2.5.0

Expat is a set of XML parsing libraries.

In certain out-of-memory situations, Expat may free memory before it should, leading to a use-after-free.

A use-after-free can result in denial of service.

There is no known workaround at this time.

All Expat users should upgrade to the latest version:


          # emerge --sync
          # emerge --ask --oneshot --verbose ">=dev-libs/expat-2.5.0"

CVE-2022-43680 ajak ajak