CVE-2022-49083

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

MEDIUM

5.5

CVSS Score

Published: February 26, 2025 at 01:54 AM UTC

Updated: June 17, 2026 at 05:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.2%

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 <[email protected]>. 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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

5.11 ≤ v < 5.15.345.16 ≤ v < 5.16.205.17 ≤ v < 5.17.35.8 ≤ v < 5.10.1115.8 ≤ v < 5.15.345.8 ≤ v < 5.16.205.8 ≤ v < 5.17.35.8 ≤ v < 5.185.18 rc1 5.86785eb9105e3363aa51408c700a55e8b5f88fcf6

Vendor states this is fixed in 1d89f2b9eadbcf3ce93c6d7238f68299a1f84968 (fixed)

Vendor states this is fixed in 47e239117bd97c8556f9187af7a9a7938db4e021 (fixed)

Vendor states this is fixed in 71ff461c3f41f6465434b9e980c01782763e7ad8 (fixed)

Vendor states this is fixed in bd905fed87ce01ac010011bb8f44ed0140116ceb (fixed)

Vendor states this is fixed in ea518578aa8a9a0280605b53cc33f707e10c8178 (fixed)

Vendor states this is fixed in 5.10.111 (unaffected)

Vendor states this is fixed in 5.15.34 (unaffected)

Vendor states this is fixed in 5.16.20 (unaffected)

Vendor states this is fixed in 5.17.3 (unaffected)

Vendor states this is fixed in 5.18 (unaffected)

Vendor states this is fixed in 5.8 (unaffected)