Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2025-21671

Severity CVSS v4.0:
Pending analysis
Type:
CWE-416 Use After Free
Publication date:
31/01/2025
Last modified:
10/02/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> zram: fix potential UAF of zram table<br /> <br /> If zram_meta_alloc failed early, it frees allocated zram-&gt;table without<br /> setting it NULL. Which will potentially cause zram_meta_free to access<br /> the table if user reset an failed and uninitialized device.

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:*:*:*:*:*:*:*:* 6.1.122 (including) 6.1.127 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.6.68 (including) 6.6.74 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.12.7 (including) 6.12.11 (excluding)

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


References to Advisories, Solutions, and Tools