CVE-2020-12768
MEDIUMCVSS 5.5/10EPSS 0.39%
Last modified
CVE-2020-12768 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. NOTE: third parties dispute this issue because it's a one-time leak at the boot, the size is negligible, and it can't be triggered at will
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.6 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Canonical | Ubuntu Linux | 20.04 |
| Debian | Debian Linux | 10.0 |
References
- https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3Issue Tracking, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068Mailing List, Patch, Vendor Advisory
- https://usn.ubuntu.com/4411-1/Third Party Advisory
- https://usn.ubuntu.com/4412-1/Third Party Advisory
- https://usn.ubuntu.com/4413-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699Third Party Advisory
- https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3Issue Tracking, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6Mailing List, Patch, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068Mailing List, Patch, Vendor Advisory
- https://usn.ubuntu.com/4411-1/Third Party Advisory
- https://usn.ubuntu.com/4412-1/Third Party Advisory
- https://usn.ubuntu.com/4413-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4699Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-12768?
An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak, aka CID-d80b64ff297e. NOTE: third parties dispute this issue because it's a one-time leak at the boot, the size is negligible, and it can't be triggered at will
How severe is CVE-2020-12768?
CVE-2020-12768 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.
How do I fix CVE-2020-12768?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-12768?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST