Vulnerability Details : CVE-2021-47325
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.
Products affected by CVE-2021-47325
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-47325
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-47325
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.5
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.8
|
3.6
|
NIST | 2025-01-13 |
References for CVE-2021-47325
-
https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation - kernel/git/stable/linux.git - Linux kernel stable treePatch
-
https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb
iommu/arm-smmu: Fix arm_smmu_device refcount leak in address translation - kernel/git/stable/linux.git - Linux kernel stable treePatch
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