Use After Free in Thekelleys Dnsmasq
CVE-2022-0934
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.025 · newest: 0.026 · change: +0.002
Affected products
- Thekelleys Dnsmasq
- Red Hat Enterprise Linux — versions 8.0, 9.0
- Dnsmasq — versions Not-Known
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html (Mailing List, Vendor Advisory)
- thekelleys.org.uk/gitweb/ (Broken Link)
- access.redhat.com/security/cve/CVE-2022-0934 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-0934?
- CVE-2022-0934 is a high-severity vulnerability in Thekelleys Dnsmasq, classified under Use After Free. CVSS score: 7.5/10. Published 2022-08-29.
- How severe is CVE-2022-0934?
- High severity. CVSS v3 base score is 7.5 out of 10.