What is CVE-2021-47101?

CVE-2021-47101 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10, affecting Linux kernel versions from 4.9 onward and patched in 5.15.12 and 5.16. CVE-2021-47101 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47101?

CVE-2021-47101 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2021-47101?

Yes, CVE-2021-47101 has been patched. Fixed versions include 5.15.12 and 5.16. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47101 actively exploited?

CVE-2021-47101 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47101

High

In the Linux kernel, the following vulnerability has been resolved: asix: fix uninit-value in asix_mdio_read() asix_read_cmd() may read less than sizeof(smsr) bytes and in this case smsr will be uninitialized. Fail log: BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497

Package Linux Kernel

Published 2024-03-04

Last modified 2025-02-03

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness type

CWE-908

CVE-2021-47101 is classified as CWE-908

See CWE-908 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 4.9 and later are affected. Fixed in 5.15.12, 5.16 and their respective stable series.

Affected from

≥ 4.9

Fixed in

✓ 5.15.12 5.15.x ✓ 5.16

References

2 total

Kernel Git
https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03

Patch
Kernel Git
https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56

Patch

Details

CVE ID CVE-2021-47101

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-03-04

Modified 2025-02-03

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47101?

CVE-2021-47101 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . It affects Linux kernel versions from 4.9 onward and has been patched in 5.15.12 and 5.16. CVE-2021-47101 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47101?

CVE-2021-47101 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2021-47101?

Yes. CVE-2021-47101 has been patched. Fixed versions include 5.15.12 and 5.16. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47101 actively exploited?

No. CVE-2021-47101 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.