What is CVE-2021-47325?

CVE-2021-47325 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.0 onward and patched in 5.4.134, 5.10.52, 5.12.19 and others. CVE-2021-47325 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47325?

CVE-2021-47325 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-2021-47325?

Yes, CVE-2021-47325 has been patched. Fixed versions include 5.4.134, 5.10.52, 5.12.19 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2021-47325 actively exploited?

CVE-2021-47325 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47325

Medium

In the Linux kernel, the following vulnerability has been resolved: iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation The reference counting issue happens in several exception handling paths of arm_smmu_iova_to_phys_hard(). When those error scenarios occur, the function forgets to decrease the refcount of "smmu" increased by arm_smmu_rpm_get(), causing a refcount leak. Fix this issue by jumping to "out" label when those error scenarios occur.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-01-13

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 5.0 and later are affected. Fixed in 5.4.134, 5.10.52, 5.12.19, 5.13.4, 5.14 and their respective stable series.

Affected from

≥ 5.0

Fixed in

✓ 5.4.134 5.4.x ✓ 5.10.52 5.10.x ✓ 5.12.19 5.12.x ✓ 5.13.4 5.13.x ✓ 5.14

References

5 total

Kernel Git
https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492

Patch
Kernel Git
https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb

Patch
Kernel Git
https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b

Patch
Kernel Git
https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554

Patch
Kernel Git
https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0

Patch

Details

CVE ID CVE-2021-47325

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-01-13

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2021-47325?

CVE-2021-47325 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.0 onward and has been patched in 5.4.134, 5.10.52, 5.12.19 and others. CVE-2021-47325 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47325?

CVE-2021-47325 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-2021-47325?

Yes. CVE-2021-47325 has been patched. Fixed versions include 5.4.134, 5.10.52, 5.12.19 and others. If you are running Linux kernel 5.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2021-47325 actively exploited?

No. CVE-2021-47325 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.