Bug 2347660 (CVE-2022-49323) - CVE-2022-49323 kernel: iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe()
Summary: CVE-2022-49323 kernel: iommu/arm-smmu: fix possible null-ptr-deref in arm_smm...
Keywords:
Status: NEW
Alias: CVE-2022-49323
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2025-02-26 03:02 UTC by OSIDB Bzimport
Modified: 2025-03-24 16:29 UTC (History)
4 users (show)

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Description OSIDB Bzimport 2025-02-26 03:02:16 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iommu/arm-smmu: fix possible null-ptr-deref in arm_smmu_device_probe()

It will cause null-ptr-deref when using 'res', if platform_get_resource()
returns NULL, so move using 'res' after devm_ioremap_resource() that
will check it to avoid null-ptr-deref.
And use devm_platform_get_and_ioremap_resource() to simplify code.
Comment 1 Mauro Matteo Cascella 2025-02-26 11:39:50 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022638-CVE-2022-49323-7559@gregkh/T
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