CVE-2020-12768
published 2020-05-09CVE-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…
PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.39%
31.9th percentile
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
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| canonical | ubuntu_linux | — | — |
| debian | debian_linux | — | — |
| debian | linux | < linux 5.6.7-1 (bookworm) | linux 5.6.7-1 (bookworm) |
| linux | linux_kernel | < 5.6 | 5.6 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.6.7-1 | 5.6.7-1 |
| linux | linux_kernel | >= 0 < 5.4.0-40.44 | 5.4.0-40.44 |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_kernel_5.4.91-3_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv5.9MEDIUM
vendor_ubuntu5.9MEDIUM
vendor_debian5.5LOW
vendor_msrc5.5MEDIUM
vendor_redhat5.5MEDIUM
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GHSA
GHSA-8gmw-3fcx-gm64: An issue was discovered in the Linux kernel before 5
ghsa_unreviewed·2022-05-24
CVE-2020-12768 [LOW] CWE-401 GHSA-8gmw-3fcx-gm64: An issue was discovered in the Linux kernel before 5
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.
OSV
linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
osv·2020-07-06·CVSS 5.9
CVE-2020-10711 [MEDIUM] linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
linux, linux-aws, linux-aws-5.3, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-gke-5.3, linux-hwe, linux-kvm, linux-oracle, linux-oracle-5.3, linux-raspi2-5.3 vulnerabilities
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (system crash).
(CVE-2020-12770)
It was discovered that the USB Gadget device driver in the Linux kernel did
not validate arguments passed from configfs
OSV
linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
osv·2020-07-06·CVSS 5.9
CVE-2020-10732 [MEDIUM] linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
linux, linux-aws, inux-azure, linux-gcp, linux-kvm, linux-oracle, linux-raspi, linux-riscv vulnerabilities
It was discovered that the elf handling code in the Linux kernel did not
initialize memory before using it in certain situations. A local attacker
could use this to possibly expose sensitive information (kernel memory).
(CVE-2020-10732)
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service
OSV
linux-gke-5.0, linux-oem-osp1 vulnerabilities
osv·2020-07-02·CVSS 5.9
CVE-2020-10711 [MEDIUM] linux-gke-5.0, linux-oem-osp1 vulnerabilities
linux-gke-5.0, linux-oem-osp1 vulnerabilities
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (system crash).
(CVE-2020-12770)
It was discovered that the USB Gadget device driver in the Linux kernel did
not validate arguments passed from configfs in some situations. A local
attacker could possibly use this to cause a denial of service (system
crash) or possibly expose sensitive information
OSV
CVE-2020-12768: An issue was discovered in the Linux kernel before 5
osv·2020-05-09·CVSS 5.5
CVE-2020-12768 [MEDIUM] CVE-2020-12768: An issue was discovered in the Linux kernel before 5
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
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-06·CVSS 5.9
CVE-2020-10711 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (system crash).
(CVE-2020-12770)
It was discovered that the USB Gadget device driver in the Linux kernel did
not validate arguments passed from configfs in some situations. A local
attacker could possibly use this to cause a denial of service
Ubuntu
Linux kernel vulnerabilities
vendor_ubuntu·2020-07-06·CVSS 5.9
CVE-2020-13143 [MEDIUM] Linux kernel vulnerabilities
Title: Linux kernel vulnerabilities
Summary: Several security issues were fixed in the Linux kernel.
It was discovered that the elf handling code in the Linux kernel did not
initialize memory before using it in certain situations. A local attacker
could use this to possibly expose sensitive information (kernel memory).
(CVE-2020-10732)
Matthew Sheets discovered that the SELinux network label handling
implementation in the Linux kernel could be coerced into de-referencing a
NULL pointer. A remote attacker could use this to cause a denial of service
(system crash). (CVE-2020-10711)
It was discovered that the SCSI generic (sg) driver in the Linux kernel did
not properly handle certain error conditions correctly. A local privileged
attacker could use this to cause a denial of service (syst
Microsoft
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
vendor_msrc·2020-05-12·CVSS 5.5
CVE-2020-12768 [MEDIUM] CWE-401 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
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
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more informatio
Red Hat
kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
vendor_redhat·2020-02-21·CVSS 5.5
CVE-2020-12768 [MEDIUM] CWE-772 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
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
A flaw was found in the Linux kernel. A memory leak in svm_cpu_init() is possible leading to a system crash. The highest threat from this vulnerability is to system availability.
Package: kernel (Red Hat Enterprise Linux 5) - Not affected
Package: kernel (Red Hat Enterprise Linux 6) - Not affected
Package: kernel (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-alt (Red Hat Enterprise Linux 7) - Not affected
Package: kernel-rt (Red Hat En
Debian
CVE-2020-12768: linux - An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x...
vendor_debian·2020·CVSS 5.5
CVE-2020-12768 [MEDIUM] CVE-2020-12768: linux - An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x...
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
Scope: local
bookworm: resolved (fixed in 5.6.7-1)
bullseye: resolved (fixed in 5.6.7-1)
forky: resolved (fixed in 5.6.7-1)
sid: resolved (fixed in 5.6.7-1)
trixie: resolved (fixed in 5.6.7-1)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c [fedora-all]
bugzilla·2020-05-12·CVSS 5.5
CVE-2020-12768 [MEDIUM] CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c [fedora-all]
CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple s
Bugzilla
CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
bugzilla·2020-05-12·CVSS 5.5
CVE-2020-12768 [MEDIUM] CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
CVE-2020-12768 kernel: memory leak in svm_cpu_init function in arch/x86/kvm/svm.c
An issue was discovered in the Linux kernel before 5.6. svm_cpu_uninit in arch/x86/kvm/svm.c has a memory leak.
Reference and upstream commit:
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
Discussion:
Created kernel tracking bugs for this issue:
Affects: fedora-all [bug 1834831]
---
This was fixed for Fedora with the 5.6 kernel rebases.
---
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):
https://access.redhat.com/security/cve/cve-2020-12768
https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068https://usn.ubuntu.com/4411-1/https://usn.ubuntu.com/4412-1/https://usn.ubuntu.com/4413-1/https://www.debian.org/security/2020/dsa-4699https://bugzilla.suse.com/show_bug.cgi?id=1171736#c3https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d80b64ff297e40c2b6f7d7abc1b3eba70d22a068https://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
2020-05-09
Published