CVE-2026-74491
CVE-2026-74491: 1 tracked advisory record across Red Hat. Compare vendor sources.
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Red Hat
1 advisory- Advisory severityMedium5.5
Medium [CVE-2026-74491] Fix NULL bus dereference in of_pci_range_parser_one
CVE-2026-74491Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: of/address: Fix NULL bus dereference in of_pci_range_parser_one() The bus matching rework made of_match_bus() return NULL for nodes with ranges/dma-ranges but no local #address-cells. parser_init() stored that NULL bus, and the range iterator later dereferenced it. Reject such nodes in parser_init(), leaving an explicit empty iterator for callers that ignore the init return, and make of_dma_get_max_cpu_address() honour the init failure so a rejected node cannot clamp the DMA limit. A null pointer dereference vulnerability exists within the `of_pci_range_parser_one()` function. This occurs when `of_match_bus()` returns a null value for nodes with specific range properties, which is then improperly dereferenced. An…
- Affected products in this advisory
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- Source-reported affected versions
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- Source-reported fixed versions
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- Mitigation guidance
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