CVE-2021-47325
Vulnerability Title: ARM SMMU Linux Kernel Reference Count Leak
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.
INFO
Published Date :
May 21, 2024, 3:15 p.m.
Last Modified :
Jan. 13, 2025, 8:04 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-47325.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-47325 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47325 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Jan. 13, 2025
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.4.134 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.52 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.12.19 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.13 up to (excluding) 5.13.4 Changed Reference Type https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 No Types Assigned https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 Patch Changed Reference Type https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 No Types Assigned https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 Patch Changed Reference Type https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb No Types Assigned https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb Patch Changed Reference Type https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb No Types Assigned https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb Patch Changed Reference Type https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b No Types Assigned https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b Patch Changed Reference Type https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b No Types Assigned https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b Patch Changed Reference Type https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 No Types Assigned https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 Patch Changed Reference Type https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 No Types Assigned https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 Patch Changed Reference Type https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 No Types Assigned https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 Patch Changed Reference Type https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 No Types Assigned https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 Added Reference https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb Added Reference https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b Added Reference https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 Added Reference https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 21, 2024
Action Type Old Value New Value Added 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. Added Reference kernel.org https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47325 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-47325
weaknesses.