CVE-2026-74389
In the Linux kernel, the following vulnerability has been resolved: RDMA/hns: Fix log flood after cmd_mbox failure hns_roce_cmd_mbox() is the command interface between driver and hardware. When hardware is abnormal, the unlimited error printings after hns_roce_cmd_mbox() failure will cause log flood and even system crash. Replace ibdev_err() and ibdev_warn() with their ratelimited versions in the error handling path after hns_roce_cmd_mbox() (and its wrappers hns_roce_create_hw_ctx/hns_roce_destroy_hw_ctx) fails.
Affected versions
Linux kernel versions
4.9
and later are affected. Fixed in
6.12.97,
6.18.40,
7.1.5,
7.2-rc1
and their respective stable series.
References
4 totalFrequently asked questions
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What is CVE-2026-74389?
CVE-2026-74389 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.9 onward and has been patched in 6.12.97, 6.18.40, 7.1.5 and others. CVE-2026-74389 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-2026-74389?
Yes. CVE-2026-74389 has been patched. Fixed versions include 6.12.97, 6.18.40, 7.1.5 and others. If you are running Linux kernel 4.9 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74389 actively exploited?
No. CVE-2026-74389 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.