Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-50454

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
01/10/2025
Last modified:
16/01/2026

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table()<br /> <br /> nouveau_bo_init() is backed by ttm_bo_init() and ferries its return code<br /> back to the caller. On failures, ttm will call nouveau_bo_del_ttm() and<br /> free the memory.Thus, when nouveau_bo_init() returns an error, the gem<br /> object has already been released. Then the call to nouveau_bo_ref() will<br /> use the freed "nvbo-&gt;bo" and lead to a use-after-free bug.<br /> <br /> We should delete the call to nouveau_bo_ref() to avoid the use-after-free.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.80
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.4 (including) 5.4.220 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.5 (including) 5.10.150 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.11 (including) 5.15.75 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 5.19.17 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.0 (including) 6.0.3 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools