7.2

CVE-2021-20292

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.3 < 4.9.298
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.263
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.140
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.59
Linux ≫ Linux Kernel Version >= 5.5 < 5.7.16
Linux ≫ Linux Kernel Version >= 5.8 < 5.8.2
Fedoraproject ≫ Fedora Version 33
Redhat ≫ Enterprise Linux Version 6.0
Redhat ≫ Enterprise Linux Version 7.0
Debian ≫ Debian Linux Version 9.0
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.85% 0.546
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6.7 0.8 5.9
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NIST 7.2 3.9 10
AV:L/AC:L/Au:N/C:C/I:C/A:C
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
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https://bugzilla.redhat.com/show_bug.cgi?id=1939686
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