CVE-2021-47485

Severity CVSS v4.0:

Pending analysis

Type:

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Publication date:

22/05/2024

Last modified:

06/01/2025

Description

In the Linux kernel, the following vulnerability has been resolved: IB/qib: Protect from buffer overflow in struct qib_user_sdma_pkt fields Overflowing either addrlimit or bytes_togo can allow userspace to trigger a buffer overflow of kernel memory. Check for overflows in all the places doing math on user controlled buffers.

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::::::::	2.6.35 (including)	4.4.292 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.5 (including)	4.9.290 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.10 (including)	4.14.255 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.15 (including)	4.19.216 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	4.20 (including)	5.4.157 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.5 (including)	5.10.77 (excluding)
cpe:2.3:o:linux:linux_kernel::::::::	5.11 (including)	5.14.16 (excluding)
cpe:2.3:o:linux:linux_kernel:5.15:rc1::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc3::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc4::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc5::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc6::::::
cpe:2.3:o:linux:linux_kernel:5.15:rc7::::::

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

CVE-2021-47485

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools