CVE-2022-0934
HIGH severity · CVSS 7.5 · Use-after-free
7.5CVSS HIGH
Summary
A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactNone
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://bugzilla.redhat.com/show_bug.cgi?id=2057075 ↗
Additional information
- NVD record
- https://bugzilla.redhat.com/show_bug.cgi?id=2057075Patch
- https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.htmlAdvisory
- https://access.redhat.com/security/cve/CVE-2022-0934Advisory
- https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39
- https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html