CVE-2020-7053: Use After Free
First published: Tue Jan 14 2020(Updated: )
A use-after-free flaw was found in the Linux kernel’s GPU driver functionality when destroying GEM context. A local user could use this flaw to crash the system or potentially escalate their privileges.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1160.21.1.rt56.1158.el7 | 0:3.10.0-1160.21.1.rt56.1158.el7 |
| redhat/kernel | <0:3.10.0-1160.21.1.el7 | 0:3.10.0-1160.21.1.el7 |
| redhat/kernel-rt | <0:4.18.0-193.rt13.51.el8 | 0:4.18.0-193.rt13.51.el8 |
| redhat/kernel | <0:4.18.0-193.el8 | 0:4.18.0-193.el8 |
| Linux Kernel | >=4.14<=4.14.165 | |
| Linux Kernel | >=4.19<=4.19.96 | |
| Linux Kernel | >=5.0<=5.2 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.15-1 |
Remedy
In case of dedicated graphic card presence and i915 GPU is not being used, you can prevent module i915 from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2020-7053 https://nvd.nist.gov/vuln/detail/CVE-2020-7053
- https://bugzilla.redhat.com/show_bug.cgi?id=1795624
- https://access.redhat.com/errata/RHSA-2021:0857
- https://access.redhat.com/errata/RHSA-2021:0856
- https://access.redhat.com/errata/RHSA-2020:1567
- https://access.redhat.com/errata/RHSA-2020:1769
- https://access.redhat.com/security/cve/cve-2020-7053
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
- http://packetstormsecurity.com/files/156455/Kernel-Live-Patch-Security-Notice-LSN-0063-1.html
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1859522
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.2
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7dc40713618c884bf07c030d1ab1f47a9dc1f310
- https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks@canonical.com
- https://security.netapp.com/advisory/ntap-20200204-0002/
- https://usn.ubuntu.com/4255-1/
- https://usn.ubuntu.com/4255-2/
- https://usn.ubuntu.com/4285-1/
- https://usn.ubuntu.com/4287-1/
- https://usn.ubuntu.com/4287-2/
- https://launchpad.net/bugs/cve/CVE-2020-7053
- https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks%40canonical.com
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7dc40713618c884bf07c030d1ab1f47a9dc1f310
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1795626
- https://access.redhat.com/solutions/41278
- https://lore.kernel.org/stable/20200114183937.12224-1-tyhicks@canonical.com/
- https://security-tracker.debian.org/tracker/CVE-2020-7053
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7053
- https://nvd.nist.gov/vuln/detail/CVE-2020-7053
- https://ubuntu.com/security/CVE-2020-7053
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2020-7053?
CVE-2020-7053 has a high severity rating due to its potential for privilege escalation and system crashes.
How do I fix CVE-2020-7053?
To fix CVE-2020-7053, update your kernel packages to the latest versions as specified in the remediation guidance.
What versions of the Linux kernel are affected by CVE-2020-7053?
CVE-2020-7053 affects Linux kernel versions from 4.14 to 4.19.x and some 5.x versions up to but not including 5.3.
Who is affected by CVE-2020-7053?
Any local user on systems using the vulnerable versions of the Linux kernel could potentially exploit CVE-2020-7053.
What kind of vulnerability is CVE-2020-7053?
CVE-2020-7053 is classified as a use-after-free vulnerability in the Linux kernel's GPU driver functionality.
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