CVE-2022-0934
published 2022-08-29CVE-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…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
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.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | dnsmasq | < dnsmasq 2.87-1 (bookworm) | dnsmasq 2.87-1 (bookworm) |
| msrc | cbl2_dnsmasq_2.89-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| thekelleys | dnsmasq | < 2.87 | 2.87 |
| thekelleys | dnsmasq | — | — |
| thekelleys | dnsmasq | >= 0 < 2.85-1+deb11u1 | 2.85-1+deb11u1 |
| thekelleys | dnsmasq | >= 0 < 2.87-1 | 2.87-1 |
| thekelleys | dnsmasq | >= 0 < 2.87-1 | 2.87-1 |
| thekelleys | dnsmasq | >= 0 < 2.87-1 | 2.87-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
GHSA
GHSA-wpmh-x6rm-9p34: A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq
ghsa_unreviewed·2022-08-29
CVE-2022-0934 [HIGH] CWE-416 GHSA-wpmh-x6rm-9p34: A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq
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.
OSV
CVE-2022-0934: A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq
osv·2022-08-29·CVSS 7.5
CVE-2022-0934 [HIGH] CVE-2022-0934: A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq
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.
Oracle
Oracle Oracle Communications Risk Matrix: Oracle Linux 8 (dnsmasq) — CVE-2022-0934
vendor_oracle·2023-01-15·CVSS 7.5
CVE-2022-0934 [HIGH] Oracle Oracle Communications Risk Matrix: Oracle Linux 8 (dnsmasq) — CVE-2022-0934
Oracle Oracle Communications Risk Matrix: Oracle Linux 8 (dnsmasq) vulnerability
CVE: CVE-2022-0934
CVSS: 7.5
Protocol: HTTP
Remote exploit: Yes
Affected versions: Network
Advisory: cpujan2023 (JAN 2023)
Microsoft
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.
vendor_msrc·2022-08-09·CVSS 7.5
CVE-2022-0934 [HIGH] CWE-416 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.
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to
Ubuntu
Dnsmasq vulnerability
vendor_ubuntu·2022-05-10
CVE-2022-0934 Dnsmasq vulnerability
Title: Dnsmasq vulnerability
Summary: Dnsmasq could be made to execute arbitrary code or expose
sensitive information if it received a specially crafted input.
Petr Menšík and Richard Johnson discovered that Dnsmasq incorrectly handled
certain inputs. An attacker could possibly use this issue to execute
arbitrary code or expose sensitive information.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
dnsmasq: Heap use after free in dhcp6_no_relay
vendor_redhat·2022-03-28·CVSS 7.5
CVE-2022-0934 [HIGH] CWE-416 dnsmasq: Heap use after free in dhcp6_no_relay
dnsmasq: Heap use after free in dhcp6_no_relay
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.
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.
Statement: The severity of this flaw was set to Moderate because this is a 1-byte out-of-bounds write/use-after-free issue where the attacker does not control the data written (it is predefined in a header file). The highest impact is only to availability.
Package: dnsmasq (Red Hat Enterprise Linux 6) - Out of support scope
Package: dnsmasq (Red Hat Ente
Debian
CVE-2022-0934: dnsmasq - A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. Thi...
vendor_debian·2022·CVSS 7.5
CVE-2022-0934 [HIGH] CVE-2022-0934: dnsmasq - A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. Thi...
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.
Scope: local
bookworm: resolved (fixed in 2.87-1)
bullseye: resolved (fixed in 2.85-1+deb11u1)
forky: resolved (fixed in 2.87-1)
sid: resolved (fixed in 2.87-1)
trixie: resolved (fixed in 2.87-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/security/cve/CVE-2022-0934https://bugzilla.redhat.com/show_bug.cgi?id=2057075https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.htmlhttps://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39https://access.redhat.com/security/cve/CVE-2022-0934https://bugzilla.redhat.com/show_bug.cgi?id=2057075https://lists.debian.org/debian-lts-announce/2024/11/msg00035.htmlhttps://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.htmlhttps://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=03345ecefeb0d82e3c3a4c28f27c3554f0611b39
2022-08-29
Published