CVE-2026-74334RDMA/nldev: Fix locking when accessing mr->pd
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from da5c8507821573b8ed6e3f47e009f273493ffaf7 before 845c6b355226195dad1f26b300c4830f57034e8b; from da5c8507821573b8ed6e3f47e009f273493ffaf7 before 7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a; from da5c8507821573b8ed6e3f47e009f273493ffaf7 before 05e26f34597e9c38bb5b340d86b179b23673869f; from da5c8507821573b8ed6e3f47e009f273493ffaf7 before a07cba1296aaa81bf9b914486ca957aaff196247; from da5c8507821573b8ed6e3f47e009f273493ffaf7 before 1a132ee4e655288d9a0937ea5109a0d038431ae9; from da5c8507821573b8ed6e3f47e009f273493ffaf7 before 50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3 | CNA record |
References
- https://git.kernel.org/stable/c/845c6b355226195dad1f26b300c4830f57034e8b
- https://git.kernel.org/stable/c/7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a
- https://git.kernel.org/stable/c/05e26f34597e9c38bb5b340d86b179b23673869f
- https://git.kernel.org/stable/c/a07cba1296aaa81bf9b914486ca957aaff196247
- https://git.kernel.org/stable/c/1a132ee4e655288d9a0937ea5109a0d038431ae9
- https://git.kernel.org/stable/c/50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.