CVE-2022-48740

Severity CVSS v4.0:

Pending analysis

Type:

CWE-415 Double Free

Publication date:

20/06/2024

Last modified:

27/05/2025

Description

In the Linux kernel, the following vulnerability has been resolved: selinux: fix double free of cond_list on error paths On error path from cond_read_list() and duplicate_policydb_cond_list() the cond_list_destroy() gets called a second time in caller functions, resulting in NULL pointer deref. Fix this by resetting the cond_list_len to 0 in cond_list_destroy(), making subsequent calls a noop. Also consistently reset the cond_list pointer to NULL after freeing. [PM: fix line lengths in the description]

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::::::::	5.7 (including)	5.10.99 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.22 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.16.8 (excluding)
cpe:2.3:o:linux:linux_kernel:5.17:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.17:rc2::::::

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

CVE-2022-48740

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools