Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2023-53181

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/09/2025
Last modified:
02/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> dma-buf/dma-resv: Stop leaking on krealloc() failure<br /> <br /> Currently dma_resv_get_fences() will leak the previously<br /> allocated array if the fence iteration got restarted and<br /> the krealloc_array() fails.<br /> <br /> Free the old array by hand, and make sure we still clear<br /> the returned *fences so the caller won&amp;#39;t end up accessing<br /> freed memory. Some (but not all) of the callers of<br /> dma_resv_get_fences() seem to still trawl through the<br /> array even when dma_resv_get_fences() failed. And let&amp;#39;s<br /> zero out *num_fences as well for good measure.

Impact

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

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.50
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.16 (including) 6.1.42 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.2 (including) 6.4.7 (excluding)
cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools