REDHAT-BUG-2057075: Use After Free
First published: Tue Feb 22 2022(Updated: )
A flaw was found in dnsmasq. A heap use after free issue in the dhcp6 server may lead to remote denial of service via crafted packet. References: <a href="https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html">https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dnsmasq |
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Reference Links
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html
- https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=03345ecefeb0d82e3c3a4c28f27c3554f0611b39
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0934
- https://access.redhat.com/errata/RHSA-2022:7633
- https://access.redhat.com/errata/RHSA-2022:8070
- https://access.redhat.com/security/cve/cve-2022-0934
- https://access.redhat.com/errata/RHSA-2024:1545
- https://bugzilla.redhat.com/show_bug.cgi?id=2057075
Frequently Asked Questions
What is the severity of REDHAT-BUG-2057075?
REDHAT-BUG-2057075 has been classified as a medium severity vulnerability due to its potential for causing a denial of service.
How do I fix REDHAT-BUG-2057075?
To fix REDHAT-BUG-2057075, you should update to the latest patched version of dnsmasq provided by your distribution.
What is the impact of REDHAT-BUG-2057075 on my system?
The impact of REDHAT-BUG-2057075 may lead to a remote denial of service attack if exploited via crafted packets targeting the DHCPv6 server.
Is REDHAT-BUG-2057075 exploitable remotely?
Yes, REDHAT-BUG-2057075 is exploitable remotely as it allows attackers to send crafted packets to the DHCPv6 server.
What versions of dnsmasq are affected by REDHAT-BUG-2057075?
REDHAT-BUG-2057075 affects multiple versions of dnsmasq that include the vulnerable DHCP6 server configuration.
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- vendor/the kelleys
- canonical/dnsmasq