Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 before bd905fed87ce01ac010011bb8f44ed0140116ceb; affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 before 47e239117bd97c8556f9187af7a9a7938db4e021; affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 before ea518578aa8a9a0280605b53cc33f707e10c8178; affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 before 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968; affected 6785eb9105e3363aa51408c700a55e8b5f88fcf6 before 71ff461c3f41f6465434b9e980c01782763e7ad8 |
| Linux / Linux | affected 5.8; unaffected 0 before 5.8; unaffected 5.10.111 through 5.10.*; unaffected 5.15.34 through 5.15.*; unaffected 5.16.20 through 5.16.*; unaffected 5.17.3 through 5.17.*; unaffected 5.18 through * |
CWE
No CWE identifiers supplied.
References
- 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