Headline
CVE-2021-3594: Invalid Bug ID
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp_input() function and could occur while processing a udp packet that is smaller than the size of the ‘udphdr’ structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
‘1970491?cve=title’ is not a valid bug number nor an alias to a bug.
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An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2020-15859: QEMU: net: e1000e: use-after-free while sending packets * CVE-2021-3592: QEMU: slirp: invalid pointer initialization may lead to information disclosure (bootp) * CVE-2021-3593: QEMU: slirp: invalid pointer initialization may lead to information disclosure (udp6) * CVE-2021-3594: QEMU: slirp: invalid pointer initi...