CVE-2022-49083

iommu/omap: Fix regression in probe for NULL pointer dereference

Description

In the Linux kernel, the following vulnerability has been resolved: iommu/omap: Fix regression in probe for NULL pointer dereference Commit 3f6634d997db ("iommu: Use right way to retrieve iommu_ops") started triggering a NULL pointer dereference for some omap variants: __iommu_probe_device from probe_iommu_group+0x2c/0x38 probe_iommu_group from bus_for_each_dev+0x74/0xbc bus_for_each_dev from bus_iommu_probe+0x34/0x2e8 bus_iommu_probe from bus_set_iommu+0x80/0xc8 bus_set_iommu from omap_iommu_init+0x88/0xcc omap_iommu_init from do_one_initcall+0x44/0x24 This is caused by omap iommu probe returning 0 instead of ERR_PTR(-ENODEV) as noted by Jason Gunthorpe <jgg@ziepe.ca>. Looks like the regression already happened with an earlier commit 6785eb9105e3 ("iommu/omap: Convert to probe/release_device() call-backs") that changed the function return type and missed converting one place.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/bd905fed87ce01ac010011bb8f44ed0140116ceb
https://git.kernel.org/stable/c/47e239117bd97c8556f9187af7a9a7938db4e021
https://git.kernel.org/stable/c/ea518578aa8a9a0280605b53cc33f707e10c8178
https://git.kernel.org/stable/c/1d89f2b9eadbcf3ce93c6d7238f68299a1f84968
https://git.kernel.org/stable/c/71ff461c3f41f6465434b9e980c01782763e7ad8

Frequently Asked Questions

What is the severity of CVE-2022-49083?: CVE-2022-49083 has not yet been assigned a CVSS score.
How to fix CVE-2022-49083?: To fix CVE-2022-49083, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-49083 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2022-49083 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-49083?: CVE-2022-49083 affects Linux Linux, Linux Linux.

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