CVE-2021-46991

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

28/02/2024

Last modified:

06/12/2024

Description

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer 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::::::::	4.16 (including)	4.19.191 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.120 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.38 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.11.22 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.12 (including)	5.12.5 (excluding)

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

CVE-2021-46991

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools