What is CVE-2020-36788?

CVE-2020-36788 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 5.4 onward and patched in 5.10.73, 5.14.12 and 5.15. CVE-2020-36788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2020-36788?

CVE-2020-36788 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2020-36788?

Yes, CVE-2020-36788 has been patched. Fixed versions include 5.10.73, 5.14.12 and 5.15. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2020-36788 actively exploited?

CVE-2020-36788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2020-36788

High

In the Linux kernel, the following vulnerability has been resolved: drm/nouveau: avoid a use-after-free when BO init fails nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code back to the caller. On failures, ttm_bo_init() invokes the provided destructor which should de-initialize and free the memory. Thus, when nouveau_bo_init() returns an error the gem object has already been released and the memory freed by nouveau_bo_del_ttm().

Package Linux Kernel

Published 2024-05-21

Last modified 2024-12-11

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-416

CVE-2020-36788 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 5.4 and later are affected. Fixed in 5.10.73, 5.14.12, 5.15 and their respective stable series.

Affected from

≥ 5.4

Fixed in

✓ 5.10.73 5.10.x ✓ 5.14.12 5.14.x ✓ 5.15

References

3 total

Kernel Git
https://git.kernel.org/stable/c/548f2ff8ea5e0ce767ae3418d1ec5308990be87d

Patch
Kernel Git
https://git.kernel.org/stable/c/bcf34aa5082ee2343574bc3f4d1c126030913e54

Patch
Kernel Git
https://git.kernel.org/stable/c/f86e19d918a85492ad1a01fcdc0ad5ecbdac6f96

Patch

Details

CVE ID CVE-2020-36788

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2024-12-11

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2020-36788?

CVE-2020-36788 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 5.4 onward and has been patched in 5.10.73, 5.14.12 and 5.15. CVE-2020-36788 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2020-36788?

CVE-2020-36788 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2020-36788?

Yes. CVE-2020-36788 has been patched. Fixed versions include 5.10.73, 5.14.12 and 5.15. If you are running Linux kernel 5.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2020-36788 actively exploited?

No. CVE-2020-36788 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.