CVEvulnerability
CVE-2021-20292
6.7 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-05-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.7 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-416
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.
Affected configurations
• 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
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1939686 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1939686 Issue Tracking, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory