CVE-2021-47325

high

Description

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.

References

https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0

https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554

https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b

https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb

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

Details

Source: Mitre, NVD

Published: 2024-05-21

Updated: 2024-05-21

Risk Information

CVSS v2

Base Score: 6.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity: High