CVE-2026-74491
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.
Affected versions
Linux kernel versions
6.13
and later are affected. Fixed in
6.18.44,
7.1.8,
7.2-rc6
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74491?
CVE-2026-74491 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.13 onward and has been patched in 6.18.44, 7.1.8 and 7.2-rc6. CVE-2026-74491 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74491?
Yes. CVE-2026-74491 has been patched. Fixed versions include 6.18.44, 7.1.8 and 7.2-rc6. If you are running Linux kernel 6.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74491 actively exploited?
No. CVE-2026-74491 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.