CVE-2023-53680

Severity CVSS v4.0:

Pending analysis

Type:

CWE-787 Out-of-bounds Write

Publication date:

07/10/2025

Last modified:

03/02/2026

Description

In the Linux kernel, the following vulnerability has been resolved: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL OPDESC() simply indexes into nfsd4_ops[] by the op&#39;s operation number, without range checking that value. It assumes callers are careful to avoid calling it with an out-of-bounds opnum value. nfsd4_decode_compound() is not so careful, and can invoke OPDESC() with opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end of nfsd4_ops[].

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 (including)	5.10.220 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.15.107 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.16 (including)	6.1.24 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	6.2 (including)	6.2.11 (excluding)
cpe:2.3:o:linux:linux_kernel:6.3:rc1::::::
cpe:2.3:o:linux:linux_kernel:6.3:rc2::::::
cpe:2.3:o:linux:linux_kernel:6.3:rc3::::::
cpe:2.3:o:linux:linux_kernel:6.3:rc4::::::
cpe:2.3:o:linux:linux_kernel:6.3:rc5::::::

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

CVE-2023-53680

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools