CVE-2022-49083

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

State: Published
Severity: Not scored
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before bd905fed87ce01ac010011bb8f44ed0140116cebAffected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 47e239117bd97c8556f9187af7a9a7938db4e021Affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before ea518578aa8a9a0280605b53cc33f707e10c8178Affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968Affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 71ff461c3f41f6465434b9e980c01782763e7ad8Affected
LinuxLinux	5.8Affected before 5.8Not affected 5.10.111 through 5.10.Not affected 5.15.34 through 5.15.Not affected 5.16.20 through 5.16.Not affected 5.17.3 through 5.17.Not affected 5.18 and laterNot affected

Product

Versions

LinuxLinux

6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before bd905fed87ce01ac010011bb8f44ed0140116cebAffected
6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 47e239117bd97c8556f9187af7a9a7938db4e021Affected
6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before ea518578aa8a9a0280605b53cc33f707e10c8178Affected
6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968Affected
6785eb9105e3363aa51408c700a55e8b5f88fcf6 to before 71ff461c3f41f6465434b9e980c01782763e7ad8Affected

LinuxLinux

5.8Affected
before 5.8Not affected
5.10.111 through 5.10.*Not affected
5.15.34 through 5.15.*Not affected
5.16.20 through 5.16.*Not affected
5.17.3 through 5.17.*Not affected
5.18 and laterNot affected

References

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