What is CVE-2021-47351?

CVE-2021-47351 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 2.6.27 onward and patched in 5.4.133, 5.10.51, 5.12.18 and others. CVE-2021-47351 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47351?

CVE-2021-47351 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-2021-47351?

Yes, CVE-2021-47351 has been patched. Fixed versions include 5.4.133, 5.10.51, 5.12.18 and others. If you are running Linux kernel 2.6.27 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47351 actively exploited?

CVE-2021-47351 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47351

Medium

In the Linux kernel, the following vulnerability has been resolved: ubifs: Fix races between xattr_{set|get} and listxattr operations UBIFS may occur some problems with concurrent xattr_{set|get} and listxattr operations, such as assertion failure, memory corruption, stale xattr value[1]. Fix it by importing a new rw-lock in @ubifs_inode to serilize write operations on xattr, concurrent read operations are still effective, just like ext4. [1] https://lore.kernel.org/linux-mtd/[email protected]

Package Linux Kernel

Published 2024-05-21

Last modified 2025-05-12

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

Weakness type

CWE-617

CVE-2021-47351 is classified as CWE-617

See CWE-617 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 2.6.27 and later are affected. Fixed in 5.4.133, 5.10.51, 5.12.18, 5.13.3, 5.14 and their respective stable series.

Affected from

≥ 2.6.27

Fixed in

✓ 5.4.133 5.4.x ✓ 5.10.51 5.10.x ✓ 5.12.18 5.12.x ✓ 5.13.3 5.13.x ✓ 5.14

References

5 total

Kernel Git
https://git.kernel.org/stable/c/38dde03eb239605f428f3f1e4baa73d4933a4cc6

Patch
Kernel Git
https://git.kernel.org/stable/c/7adc05b73d91a5e3d4ca7714fa53ad9b70c53d08

Patch
Kernel Git
https://git.kernel.org/stable/c/9558612cb829f2c022b788f55d6b8437d5234a82

Patch
Kernel Git
https://git.kernel.org/stable/c/c0756f75c22149d20fcb7d8409827cee905eb386

Patch
Kernel Git
https://git.kernel.org/stable/c/f4e3634a3b642225a530c292fdb1e8a4007507f5

Patch

Details

CVE ID CVE-2021-47351

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-05-12

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47351?

CVE-2021-47351 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 2.6.27 onward and has been patched in 5.4.133, 5.10.51, 5.12.18 and others. CVE-2021-47351 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47351?

CVE-2021-47351 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-2021-47351?

Yes. CVE-2021-47351 has been patched. Fixed versions include 5.4.133, 5.10.51, 5.12.18 and others. If you are running Linux kernel 2.6.27 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47351 actively exploited?

No. CVE-2021-47351 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.