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Red Hat Enterprise Linux 8: RHSA-2022:7633-01 Moderate: dnsmasq Heap Issue

red hat
Calendar Grey November 8, 2022
Dist Redhat Esm H88
Stay secure with the latest dnsmasq update for Red Hat Enterprise Linux 8, addressing moderate vulnerabilities and enhancing overall system integrity
An update for dnsmasq is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server.
Security Fix(es):
* dnsmasq: Heap use after free in dhcp6_no_relay (CVE-2022-0934)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate security fix Red Hat Enterprise Linux DHCP dnsmasq heap issue

References

https://access.redhat.com/security/cve/CVE-2022-0934 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.7_release_notes/index

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: dnsmasq-2.79-24.el8.src.rpm
aarch64: dnsmasq-2.79-24.el8.aarch64.rpm dnsmasq-debuginfo-2.79-24.el8.aarch64.rpm dnsmasq-debugsource-2.79-24.el8.aarch64.rpm dnsmasq-utils-2.79-24.el8.aarch64.rpm dnsmasq-utils-debuginfo-2.79-24.el8.aarch64.rpm
ppc64le: dnsmasq-2.79-24.el8.ppc64le.rpm dnsmasq-debuginfo-2.79-24.el8.ppc64le.rpm dnsmasq-debugsource-2.79-24.el8.ppc64le.rpm dnsmasq-utils-2.79-24.el8.ppc64le.rpm dnsmasq-utils-debuginfo-2.79-24.el8.ppc64le.rpm
s390x: dnsmasq-2.79-24.el8.s390x.rpm dnsmasq-debuginfo-2.79-24.el8.s390x.rpm dnsmasq-debugsource-2.79-24.el8.s390x.rpm dnsmasq-utils-2.79-24.el8.s390x.rpm dnsmasq-utils-debuginfo-2.79-24.el8.s390x.rpm
x86_64: dnsmasq-2.79-24.el8.x86_64.rpm dnsmasq-debuginfo-2.79-24.el8.x86_64.rpm dnsmasq-debugsource-2.79-24.el8.x86_64.rpm dnsmasq-utils-2.79-24.el8.x86_64.rpm dnsmasq-utils-debuginfo-2.79-24.el8.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key


Advisory ID: RHSA-2022:7633-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:7633
Issue date: 2022-11-08

Topic

An update for dnsmasq is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate security fix Red Hat Enterprise Linux DHCP dnsmasq heap issue

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2049691 - Malformed DHCPv6 NTP option

2057075 - CVE-2022-0934 dnsmasq: Heap use after free in dhcp6_no_relay

2120357 - dnsmasq high CPU usage in 4.11 spoke deployment or after 4.10.21 to 4.11.0-rc.1 upgrade on an SNO node [rhel8]

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