libvirt: CVE-2022-0897

Debian Bug report logs - #1009075
libvirt: CVE-2022-0897

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: libvirt: CVE-2022-0897

Date: Wed, 06 Apr 2022 23:01:05 +0200

Source: libvirt
Version: 8.1.0-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for libvirt.

CVE-2022-0897[0]:
| A flaw was found in the libvirt nwfilter driver. The
| virNWFilterObjListNumOfNWFilters method failed to acquire the
| `driver-&gt;nwfilters` mutex before iterating over virNWFilterObj
| instances. There was no protection to stop another thread from
| concurrently modifying the `driver-&gt;nwfilters` object. This flaw
| allows a malicious, unprivileged user to exploit this issue via
| libvirt&amp;#8217;s API virConnectNumOfNWFilters to crash the network
| filter management daemon (libvirtd/virtnwfilterd).


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-0897
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0897
[1] https://gitlab.com/libvirt/libvirt/-/commit/a4947e8f63c3e6b7b067b444f3d6cf674c0d7f36

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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