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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/05e26f34597e9c38bb5b340d86b179b23673869f
https://git.kernel.org/stable/c/1a132ee4e655288d9a0937ea5109a0d038431ae9
https://git.kernel.org/stable/c/50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3
https://git.kernel.org/stable/c/7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a
https://git.kernel.org/stable/c/845c6b355226195dad1f26b300c4830f57034e8b
https://git.kernel.org/stable/c/a07cba1296aaa81bf9b914486ca957aaff196247

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-09-14 12:17

NVD link : CVE-2026-74334

Mitre link : CVE-2026-74334

CVE.ORG link : CVE-2026-74334

JSON object : View

Products Affected

No product.

CWE

No CWE.

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