CVE-2021-47301

Severity CVSS v4.0:

Pending analysis

Type:

CWE-416 Use After Free

Publication date:

21/05/2024

Last modified:

26/12/2024

Description

In the Linux kernel, the following vulnerability has been resolved: igb: Fix use-after-free error during reset Cleans the next descriptor to watch (next_to_watch) when cleaning the TX ring. Failure to do so can cause invalid memory accesses. If igb_poll() runs while the controller is reset this can lead to the driver try to free a skb that was already freed. (The crash is harder to reproduce with the igb driver, but the same potential problem exists as the code is identical to igc)

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::::::::	4.12 (including)	4.14.241 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.199 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.136 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.54 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.13.6 (excluding)
cpe:2.3:o:linux:linux_kernel:5.14:rc1::::::

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

CVE-2021-47301

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools