What is CVE-2021-47467?

CVE-2021-47467 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10, affecting Linux kernel versions from 5.14 onward and patched in 5.14.15 and 5.15. CVE-2021-47467 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47467?

CVE-2021-47467 has a CVSS score of 5.3 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Is there a patch available for CVE-2021-47467?

Yes, CVE-2021-47467 has been patched. Fixed versions include 5.14.15 and 5.15. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47467 actively exploited?

CVE-2021-47467 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47467

Medium

In the Linux kernel, the following vulnerability has been resolved: kunit: fix reference count leak in kfree_at_end The reference counting issue happens in the normal path of kfree_at_end(). When kunit_alloc_and_get_resource() is invoked, the function forgets to handle the returned resource object, whose refcount increased inside, causing a refcount leak. Fix this issue by calling kunit_alloc_resource() instead of kunit_alloc_and_get_resource(). Fixed the following when applying: Shuah Khan <[email protected]> CHECK: Alignment should match open parenthesis + kunit_alloc_resource(test, NULL, kfree_res_free, GFP_KERNEL, (void *)to_free);

Package Linux Kernel

Published 2024-05-22

Last modified 2025-04-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.3

out of 10

Medium

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

Low

Vector string

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

Affected versions

Linux kernel versions 5.14 and later are affected. Fixed in 5.14.15, 5.15 and their respective stable series.

Affected from

≥ 5.14

Fixed in

✓ 5.14.15 5.14.x ✓ 5.15

References

2 total

Kernel Git
https://git.kernel.org/stable/c/bbdd158b40b66a9403391a517f24ef6613573446

Patch
Kernel Git
https://git.kernel.org/stable/c/f62314b1ced25c58b86e044fc951cd6a1ea234cf

Patch

Details

CVE ID CVE-2021-47467

Severity Medium

CVSS score 5.3 / 10

CVSS version 3.1

Published 2024-05-22

Modified 2025-04-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47467?

CVE-2021-47467 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.3 out of 10 . It affects Linux kernel versions from 5.14 onward and has been patched in 5.14.15 and 5.15. CVE-2021-47467 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47467?

CVE-2021-47467 has a CVSS score of 5.3 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Is there a patch available for CVE-2021-47467?

Yes. CVE-2021-47467 has been patched. Fixed versions include 5.14.15 and 5.15. If you are running Linux kernel 5.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47467 actively exploited?

No. CVE-2021-47467 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.