vulnerability
Ubuntu: (CVE-2022-49083): linux vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Feb 26, 2025 | Mar 19, 2025 | Mar 21, 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 .
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.
Solution(s)
References
- CVE-2022-49083
- https://attackerkb.com/topics/CVE-2022-49083
- URL-https://git.kernel.org/linus/71ff461c3f41f6465434b9e980c01782763e7ad8
- URL-https://git.kernel.org/stable/c/1d89f2b9eadbcf3ce93c6d7238f68299a1f84968
- URL-https://git.kernel.org/stable/c/47e239117bd97c8556f9187af7a9a7938db4e021
- URL-https://git.kernel.org/stable/c/71ff461c3f41f6465434b9e980c01782763e7ad8
- URL-https://git.kernel.org/stable/c/bd905fed87ce01ac010011bb8f44ed0140116ceb
- URL-https://git.kernel.org/stable/c/ea518578aa8a9a0280605b53cc33f707e10c8178
- URL-https://www.cve.org/CVERecord?id=CVE-2022-49083
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.