UBUNTU-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.
02 / AFFECTED SOFTWARE
Affected packages
191 explicit affected versions
64 explicit affected versions
14 explicit affected versions
44 explicit affected versions
17 explicit affected versions
74 explicit affected versions
23 explicit affected versions
71 explicit affected versions
1 explicit affected versions
1 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
1 explicit affected versions
14 explicit affected versions
18 explicit affected versions
14 explicit affected versions
19 explicit affected versions
10 explicit affected versions
137 explicit affected versions
70 explicit affected versions
41 explicit affected versions
1 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
58 explicit affected versions
1 explicit affected versions
16 explicit affected versions
33 explicit affected versions
10 explicit affected versions
43 explicit affected versions
11 explicit affected versions
66 explicit affected versions
14 explicit affected versions
2 explicit affected versions
61 explicit affected versions
6 explicit affected versions
1 explicit affected versions
20 explicit affected versions
1 explicit affected versions
23 explicit affected versions
4 explicit affected versions
1 explicit affected versions
4 explicit affected versions
1 explicit affected versions
20 explicit affected versions
4 explicit affected versions
44 explicit affected versions
16 explicit affected versions
38 explicit affected versions
9 explicit affected versions
114 explicit affected versions
4 explicit affected versions
49 explicit affected versions
74 explicit affected versions
51 explicit affected versions
11 explicit affected versions
42 explicit affected versions
4 explicit affected versions
43 explicit affected versions
1 explicit affected versions
92 explicit affected versions
89 explicit affected versions
12 explicit affected versions
8 explicit affected versions
4 explicit affected versions
1 explicit affected versions
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://bugzilla.redhat.com/show_bug.cgi?id=1939686
- https://git.kernel.org/linus/5de5b6ecf97a021f29403aa272cb4e03318ef586
- https://ubuntu.com/security/CVE-2021-20292
- https://ubuntu.com/security/notices/USN-4946-1
- https://ubuntu.com/security/notices/USN-5343-1
- https://www.cve.org/CVERecord?id=CVE-2021-20292