CVE-2026-74334
In the Linux kernel, the following vulnerability has been resolved: RDMA/nldev: Fix locking when accessing mr->pd Sashiko points out that, due to rereg_mr, the PD is actually variable and all the touches in nldev are racy. Use mr->device instead of mr->pd->device. Getting the PD restrack ID is more tricky. To avoid disturbing all the happy paths, add an rdma_restrack_sync() operation which is sort of like flush_workqueue() or synchronize_irq(): after it returns, all the old nldev touches to the mr are gone and everything sees the new PD. This makes it safe to reach into the PD pointer.
Affected versions
Linux kernel versions
4.18
and later are affected. Fixed in
7.1.5,
7.2-rc1
and their respective stable series.
References
2 totalFrequently asked questions
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What is CVE-2026-74334?
CVE-2026-74334 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 4.18 onward and has been patched in 7.1.5 and 7.2-rc1. CVE-2026-74334 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-2026-74334?
Yes. CVE-2026-74334 has been patched. Fixed versions include 7.1.5 and 7.2-rc1. If you are running Linux kernel 4.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74334 actively exploited?
No. CVE-2026-74334 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.