CVE-2022-0934

HIGH
Published Aug 29, 20223y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Aug 29, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-416 Use After Free Memory Safety

Affected Products 3

VendorProductVersionRange
thekelleysdnsmasq* <2.87
redhatenterprise_linux8.0any
redhatenterprise_linux9.0any

References 5

  • access.redhat.com https://access.redhat.com/security/cve/CVE-2022-0934
    Third Party Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2057075
    Issue TrackingPatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2024/11/msg00035.html
  • lists.thekelleys.org.uk https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html
    Mailing ListVendor Advisory
  • thekelleys.org.uk https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39
    Broken Link

Remediation

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2057075
    Issue TrackingPatchThird Party Advisory