Information disclosure in Linux kernel - CVE-2021-47325
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91336
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-47325
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to information disclosure within the arm_smmu_iova_to_phys_hard() function in drivers/iommu/arm-smmu.c. A local user can gain access to sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2021-47325
Install update from vendor's website.
Linux kernel - addressed in versions 5.4.134, 5.10.52, 5.12.19, 5.13.4, 5.14
External References
- https://git.kernel.org/stable/c/b11220803ad14a2a880cc06d8e01fe2548cc85b0
- https://git.kernel.org/stable/c/43d1aaa1965f9b58035196dac49b1e1e6c9c25eb
- https://git.kernel.org/stable/c/0f0c5ea09139777d90729d408b807021f2ea6492
- https://git.kernel.org/stable/c/5f9741a9a91f25c89e04b408cd61e3ab050ce24b
- https://git.kernel.org/stable/c/7c8f176d6a3fa18aa0f8875da6f7c672ed2a8554
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.52
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.19
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.134