What is CVE-2021-47188?

CVE-2021-47188 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 3.4 onward and patched in 5.10.258, 5.15.5 and 5.16. CVE-2021-47188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47188?

CVE-2021-47188 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2021-47188?

Yes, CVE-2021-47188 has been patched. Fixed versions include 5.10.258, 5.15.5 and 5.16. If you are running Linux kernel 3.4 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47188 actively exploited?

CVE-2021-47188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47188

Medium

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: core: Improve SCSI abort handling The following has been observed on a test setup: WARNING: CPU: 4 PID: 250 at drivers/scsi/ufs/ufshcd.c:2737 ufshcd_queuecommand+0x468/0x65c Call trace: ufshcd_queuecommand+0x468/0x65c scsi_send_eh_cmnd+0x224/0x6a0 scsi_eh_test_devices+0x248/0x418 scsi_eh_ready_devs+0xc34/0xe58 scsi_error_handler+0x204/0x80c kthread+0x150/0x1b4 ret_from_fork+0x10/0x30 That warning is triggered by the following statement: WARN_ON(lrbp->cmd); Fix this warning by clearing lrbp->cmd from the abort handler.

Package Linux Kernel

Published 2024-04-10

Last modified 2026-06-01

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.4 and later are affected. Fixed in 5.10.258, 5.15.5, 5.16 and their respective stable series.

Affected from

≥ 3.4

Fixed in

✓ 5.10.258 5.10.x ✓ 5.15.5 5.15.x ✓ 5.16

References

3 total

Kernel Git
https://git.kernel.org/stable/c/3ff1f6b6ba6f97f50862aa50e79959cc8ddc2566

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/c36baca06efa833adaefba61f45fefdc49b6d070

Mailing List Patch
Kernel Git
https://git.kernel.org/stable/c/9491bc16082d9a402c9099acbfffc89af6f9316f

Details

CVE ID CVE-2021-47188

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-04-10

Modified 2026-06-01

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47188?

CVE-2021-47188 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 3.4 onward and has been patched in 5.10.258, 5.15.5 and 5.16. CVE-2021-47188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47188?

CVE-2021-47188 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2021-47188?

Yes. CVE-2021-47188 has been patched. Fixed versions include 5.10.258, 5.15.5 and 5.16. If you are running Linux kernel 3.4 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47188 actively exploited?

No. CVE-2021-47188 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.