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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
6785eb9105e3363aa51408c700a55e8b5f88fcf6 to < bd905fed87ce01ac010011bb8f44ed0140116cebaffected6785eb9105e3363aa51408c700a55e8b5f88fcf6 to < 47e239117bd97c8556f9187af7a9a7938db4e021affected6785eb9105e3363aa51408c700a55e8b5f88fcf6 to < ea518578aa8a9a0280605b53cc33f707e10c8178affected6785eb9105e3363aa51408c700a55e8b5f88fcf6 to < 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968affected6785eb9105e3363aa51408c700a55e8b5f88fcf6 to < 71ff461c3f41f6465434b9e980c01782763e7ad8affected
Linux Linux
Default version status: affected
5.8affected0 to < 5.8unaffected5.10.111 to ≤ 5.10.*unaffected5.15.34 to ≤ 5.15.*unaffected5.16.20 to ≤ 5.16.*unaffected5.17.3 to ≤ 5.17.*unaffected5.18 to ≤ *unaffected
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 ↗