CVE-2023-53373

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

18/09/2025

Last modified:

12/12/2025

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: seqiv - Handle EBUSY correctly As it is seqiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request. However, as the caller of seqiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

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::::::::	2.6.25 (including)	4.14.308 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.276 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.235 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.173 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.99 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.16 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.2.3 (excluding)

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

CVE-2023-53373

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools