High severity7.8NVD Advisory· Published Feb 29, 2024· Updated Jun 17, 2026
CVE-2021-47061
CVE-2021-47061
Description
In the Linux kernel, the following vulnerability has been resolved:
KVM: Destroy I/O bus devices on unregister failure _after_ sync'ing SRCU
If allocating a new instance of an I/O bus fails when unregistering a device, wait to destroy the device until after all readers are guaranteed to see the new null bus. Destroying devices before the bus is nullified could lead to use-after-free since readers expect the devices on their reference of the bus to remain valid.
Affected products
93- osv-coords91 versionspkg:rpm/suse/kernel-64kb&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-default-base&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5pkg:rpm/suse/kernel-docs&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_46&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2pkg:rpm/suse/kernel-livepatch-SLE15-SP2_Update_47&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP2pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_42&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_43&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/kernel-preempt&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.2pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2012%20SP5pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/kgraft-patch-SLE12-SP5_Update_56&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2012%20SP5
< 5.3.18-150300.59.153.2+ 90 more
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150200.24.183.1.150200.9.93.2
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150200.24.183.1.150200.9.93.2
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150200.24.183.1.150200.9.93.2
- (no CPE)range: < 5.3.18-150300.59.153.2.150300.18.90.2
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 1-150200.5.3.2
- (no CPE)range: < 1-150200.5.3.3
- (no CPE)range: < 1-150300.7.3.2
- (no CPE)range: < 1-150300.7.3.5
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-10.182.1
- (no CPE)range: < 5.3.18-150300.161.1
- (no CPE)range: < 5.3.18-150300.161.1
- (no CPE)range: < 4.12.14-10.182.1
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 5.3.18-150300.161.1
- (no CPE)range: < 5.3.18-150300.161.1
- (no CPE)range: < 4.12.14-10.182.1
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 4.12.14-16.182.1
- (no CPE)range: < 5.3.18-150300.59.153.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.1
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.1
- (no CPE)range: < 4.12.14-122.216.1
- (no CPE)range: < 5.3.18-150200.24.183.1
- (no CPE)range: < 5.3.18-150300.59.153.1
- (no CPE)range: < 4.12.14-10.182.1
- (no CPE)range: < 5.3.18-150300.59.153.2
- (no CPE)range: < 1-8.3.1
Patches
Vulnerability mechanics
References
4News mentions
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