CVE-2020-12768
First published: Sat May 09 2020(Updated: )
** DISPUTED ** 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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <5.6 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =19.10 | |
| Ubuntu Linux | =20.04 | |
| Debian GNU/Linux | =10.0 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.13-1 | |
| Ubuntu | =18.04 | |
| Ubuntu | =19.10 | |
| Ubuntu | =20.04 | |
| Debian | =10.0 |
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Reference Links
- https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068
- https://usn.ubuntu.com/4411-1/
- https://usn.ubuntu.com/4412-1/
- https://usn.ubuntu.com/4413-1/
- https://www.debian.org/security/2020/dsa-4699
- https://launchpad.net/bugs/cve/CVE-2020-12768
- https://git.kernel.org/linus/d80b64ff297e40c2b6f7d7abc1b3eba70d22a068
- https://security-tracker.debian.org/tracker/CVE-2020-12768
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12768
- https://nvd.nist.gov/vuln/detail/CVE-2020-12768
- https://ubuntu.com/security/CVE-2020-12768
Frequently Asked Questions
What is the severity of CVE-2020-12768?
The severity of CVE-2020-12768 is generally considered low, as it involves a minor one-time memory leak during boot.
How do I fix CVE-2020-12768?
To fix CVE-2020-12768, update the Linux kernel to version 5.10.223-1 or higher.
Which Linux distributions are affected by CVE-2020-12768?
CVE-2020-12768 affects versions of the Linux kernel prior to 5.6, as well as specific releases of Ubuntu and Debian.
Can CVE-2020-12768 be exploited remotely?
No, CVE-2020-12768 cannot be exploited remotely as the memory leak occurs only at boot time.
Is CVE-2020-12768 a serious threat to my system?
CVE-2020-12768 is not considered a serious threat since it represents a minor leak that does not impact runtime performance.
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