Linux Kernel up to 5.8.9 virt/kvm/kvm_main.c kvm_io_bus_unregister_dev memory leak
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
3.4 | $0-$5k | 0.00 |
A vulnerability, which was classified as problematic, was found in Linux Kernel up to 5.8.9 (Operating System). This affects the function kvm_io_bus_unregister_dev
of the file virt/kvm/kvm_main.c. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability.
The weakness was released 04/07/2021. It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2020-36312. Technical details of the vulnerability are known, but there is no available exploit.
Upgrading to version 5.8.10 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 3.5VulDB Meta Temp Score: 3.4
VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Memory leakCWE: CWE-401 / CWE-404
ATT&CK: Unknown
Local: No
Remote: Partially
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Kernel 5.8.10
Patch: git.kernel.org
Timeline
04/06/2021 🔍04/07/2021 🔍
04/07/2021 🔍
04/11/2021 🔍
Sources
Vendor: kernel.orgAdvisory: git.kernel.org
Status: Confirmed
CVE: CVE-2020-36312 (🔍)
Entry
Created: 04/07/2021 13:18Updated: 04/11/2021 10:48
Changes: 04/07/2021 13:18 (43), 04/11/2021 10:48 (5)
Complete: 🔍
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