CVE-2021-20292
Last modified
CVE-2021-20292 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. There is a flaw reported in the Linux kernel in versions before 5.9 in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The issue results from the lack of validating the existence of an object prior to performing operations on the object. EPSS estimates a 0.87% chance of exploitation in the next 30 days.
Description
There is a flaw reported in the Linux kernel in versions before 5.9 in drivers/gpu/drm/nouveau/nouveau_sgdma.c in nouveau_sgdma_create_ttm in Nouveau DRM subsystem. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker with a local account with a root privilege, can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.3, < 4.9.298 |
| Linux | Linux Kernel | >= 4.10, < 4.14.263 |
| Linux | Linux Kernel | >= 4.15, < 4.19.140 |
| Linux | Linux Kernel | >= 4.20, < 5.4.59 |
| Linux | Linux Kernel | >= 5.5, < 5.7.16 |
| Linux | Linux Kernel | >= 5.8, < 5.8.2 |
| Fedoraproject | Fedora | 33 |
| Redhat | Enterprise Linux | 6.0 |
| Redhat | Enterprise Linux | 7.0 |
| Debian | Debian Linux | 9.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1939686Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1939686Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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