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
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. 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. 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.