Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2022-49408

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
26/02/2025
Last modified:
01/10/2025

Description

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ext4: fix memory leak in parse_apply_sb_mount_options()<br /> <br /> If processing the on-disk mount options fails after any memory was<br /> allocated in the ext4_fs_context, e.g. s_qf_names, then this memory is<br /> leaked. Fix this by calling ext4_fc_free() instead of kfree() directly.<br /> <br /> Reproducer:<br /> <br /> mkfs.ext4 -F /dev/vdc<br /> tune2fs /dev/vdc -E mount_opts=usrjquota=file<br /> echo clear &gt; /sys/kernel/debug/kmemleak<br /> mount /dev/vdc /vdc<br /> echo scan &gt; /sys/kernel/debug/kmemleak<br /> sleep 5<br /> echo scan &gt; /sys/kernel/debug/kmemleak<br /> cat /sys/kernel/debug/kmemleak

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:*:*:*:*:*:*:*:* 5.17 (including) 5.17.14 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.18 (including) 5.18.3 (excluding)

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


References to Advisories, Solutions, and Tools