CVE-2022-49053

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

26/02/2025

Last modified:

24/03/2025

Description

In the Linux kernel, the following vulnerability has been resolved: scsi: target: tcmu: Fix possible page UAF tcmu_try_get_data_page() looks up pages under cmdr_lock, but it does not take refcount properly and just returns page pointer. When tcmu_try_get_data_page() returns, the returned page may have been freed by tcmu_blocks_release(). We need to get_page() under cmdr_lock to avoid concurrent tcmu_blocks_release().

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::::::::		4.14.276 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.239 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.190 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.112 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.35 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	5.17.4 (excluding)
cpe:2.3:o:linux:linux_kernel:5.18:rc1::::::

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

CVE-2022-49053

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools