Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/88752b811f72aa7a16de6dad4b25031d7308673e
- https://git.kernel.org/stable/c/bba13ad17b1a11b3f1ed9b3a5d556191d7755a59
- https://git.kernel.org/stable/c/eddd0159a8761a16a9d183676b03cf493417816e
FAQ
What is CVE-2026-74491?
CVE-2026-74491 is a documented vulnerability. 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 node...
How severe is CVE-2026-74491?
CVSS scoring is not yet available for CVE-2026-74491. Check NVD for updates.
Is there a patch for CVE-2026-74491?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.