Medium severity5.5NVD Advisory· Published Mar 9, 2021· Updated Jun 17, 2026
CVE-2021-20255
CVE-2021-20255
Description
A stack overflow via an infinite recursion vulnerability was found in the eepro100 i8255x device emulator of QEMU. This issue occurs while processing controller commands due to a DMA reentry issue. This flaw allows a guest user or process to consume CPU cycles or crash the QEMU process on the host, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
53- osv-coords49 versionspkg:apk/chainguard/qemu-block-rbdpkg:apk/chainguard/qemu-ipxepkg:apk/chainguard/qemu-system-x86_64pkg:apk/chainguard/qemu-utilspkg:apk/wolfi/qemu-block-rbdpkg:apk/wolfi/qemu-ipxepkg:apk/wolfi/qemu-system-x86_64pkg:apk/wolfi/qemu-utilspkg:rpm/opensuse/qemu&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/qemu&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/qemu-linux-user&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/qemu-testsuite&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/qemu&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Micro%205.0pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/qemu&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/qemu&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/xen&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/xen&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 11.0.1-r0+ 48 more
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 11.0.1-r0
- (no CPE)range: < 4.2.1-lp152.9.20.1
- (no CPE)range: < 4.2.1-11.28.1
- (no CPE)range: < 4.2.1-lp152.9.20.1
- (no CPE)range: < 4.2.1-lp152.9.20.1
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 2.11.2-70.59.1
- (no CPE)range: < 2.11.2-70.59.1
- (no CPE)range: < 4.2.1-11.28.1
- (no CPE)range: < 4.2.1-11.28.1
- (no CPE)range: < 5.2.0-103.2
- (no CPE)range: < 4.2.1-11.28.1
- (no CPE)range: < 5.2.0-103.2
- (no CPE)range: < 2.6.2-41.73.1
- (no CPE)range: < 2.11.2-5.40.2
- (no CPE)range: < 3.1.1.1-57.2
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 2.11.2-70.59.1
- (no CPE)range: < 2.11.2-5.40.2
- (no CPE)range: < 3.1.1.1-57.2
- (no CPE)range: < 2.11.2-70.59.1
- (no CPE)range: < 3.1.1.1-80.40.1
- (no CPE)range: < 2.11.2-5.40.2
- (no CPE)range: < 2.11.2-5.40.2
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.4.4_50-61.67.1
- (no CPE)range: < 4.7.6_16-43.79.5
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.11.4_20-2.60.1
- (no CPE)range: < 4.12.4_12-3.49.1
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.11.4_20-2.60.1
- (no CPE)range: < 4.12.4_12-3.49.1
- (no CPE)range: < 4.12.4_12-3.49.1
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.11.4_20-2.60.1
- (no CPE)range: < 4.9.4_20-3.91.1
- (no CPE)range: < 4.11.4_20-2.60.1
Patches
Vulnerability mechanics
References
5- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2021/02/25/1nvdMailing ListPatchThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/04/msg00009.htmlnvdMailing ListThird Party Advisory
- ruhr-uni-bochum.sciebo.de/s/NNWP2GfwzYKeKwEnvdThird Party Advisory
- security.netapp.com/advisory/ntap-20210507-0003/nvdThird Party Advisory
News mentions
0No linked articles in our index yet.