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CVE-2020-36788

21
FAUCET Score

CVE-2020-36788 is a use-after-free vulnerability in the Linux kernel's Nouveau DRM driver, specifically within the nouveau_bo_init() function. This flaw occurs when memory is prematurely freed during a failed buffer object initialization, leading to potential system instability or privilege escalation. With a CVSS score of 7.8 (High), it can be exploited locally with low complexity to achieve high confidentiality, integrity, and availability impacts. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.4, < 5.10.73CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
>= 5.11, < 5.14.12CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
5.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
5.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
5.15CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:5.15:rc3:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.23%
Probability of exploitation in next 30 days
EPSS Percentile
13.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0023 is in the 45th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2020-36788Moderate

kernel: drm/nouveau: avoid a use-after-free when BO init fails

May 21, 2024

References

git.kernel.org / stable/c/548f2ff8ea5e0ce767ae3418d1ec5308990be87d
Patch
git.kernel.org / stable/c/bcf34aa5082ee2343574bc3f4d1c126030913e54
Patch
git.kernel.org / stable/c/f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96
Patch