Unrated severityNVD Advisory· Published Aug 25, 2022· Updated Feb 28, 2025
CVE-2021-3929
CVE-2021-3929
Description
A DMA reentrancy issue was found in the NVM Express Controller (NVME) emulation in QEMU. This CVE is similar to CVE-2021-3750 and, just like it, when the reentrancy write triggers the reset function nvme_ctrl_reset(), data structs will be freed leading to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition or, potentially, executing arbitrary code within the context of the QEMU process on the host.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
23- osv-coords21 versionspkg:rpm/opensuse/qemu&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/qemu&distro=openSUSE%20Tumbleweedpkg:rpm/suse/qemu&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP3pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/qemu&distro=SUSE%20Manager%20Proxy%204.2pkg:rpm/suse/qemu&distro=SUSE%20Manager%20Server%204.2
< 4.2.1-150200.79.1+ 20 more
- (no CPE)range: < 4.2.1-150200.79.1
- (no CPE)range: < 6.2.0-44.1
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 3.1.1.1-150100.80.51.5
- (no CPE)range: < 4.2.1-150200.79.1
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 2.6.2-41.76.1
- (no CPE)range: < 3.1.1.1-66.1
- (no CPE)range: < 3.1.1.1-150100.80.51.5
- (no CPE)range: < 4.2.1-150200.79.1
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 3.1.1.1-66.1
- (no CPE)range: < 3.1.1.1-150100.80.51.5
- (no CPE)range: < 4.2.1-150200.79.1
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
- (no CPE)range: < 5.2.0-150300.121.2
Patches
Vulnerability mechanics
References
6- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XHNN7QJCEQH7AQG5AQP2GEFAQE6K635I/mitrevendor-advisoryx_refsource_FEDORA
- access.redhat.com/security/cve/CVE-2021-3929mitrex_refsource_MISC
- bugzilla.redhat.com/show_bug.cgimitrex_refsource_MISC
- gitlab.com/qemu-project/qemu/-/commit/736b01642d85be832385mitrex_refsource_MISC
- gitlab.com/qemu-project/qemu/-/issues/556mitrex_refsource_MISC
- gitlab.com/qemu-project/qemu/-/issues/782mitrex_refsource_MISC
News mentions
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