CVE-2026-74334RDMA/nldev: Fix locking when accessing mr->pd
- 7.8HighCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
Published
- 2 months later
· 2 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Received | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < 845c6b355226195dad1f26b300c4830f57034e8b
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < 7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < 05e26f34597e9c38bb5b340d86b179b23673869f
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < a07cba1296aaa81bf9b914486ca957aaff196247
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < 1a132ee4e655288d9a0937ea5109a0d038431ae9
- affected da5c8507821573b8ed6e3f47e009f273493ffaf7 – < 50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3
- affected 4.18
- unaffected < 4.18
- unaffected 6.1.188 – ≤ 6.1.*
- unaffected 6.6.157 – ≤ 6.6.*
- unaffected 6.12.110 – ≤ 6.12.*
- unaffected 6.18.52 – ≤ 6.18.*
- unaffected 7.1.5 – ≤ 7.1.*
- unaffected 7.2 – ≤ *
References
References6
- https://git.kernel.org/stable/c/845c6b355226195dad1f26b300c4830f57034e8b (opens in a new tab)
- https://git.kernel.org/stable/c/7a0cbb5721a1da81e902d73b6049f85ca8f3fc0a (opens in a new tab)
- https://git.kernel.org/stable/c/05e26f34597e9c38bb5b340d86b179b23673869f (opens in a new tab)
- https://git.kernel.org/stable/c/a07cba1296aaa81bf9b914486ca957aaff196247 (opens in a new tab)
- https://git.kernel.org/stable/c/1a132ee4e655288d9a0937ea5109a0d038431ae9 (opens in a new tab)
- https://git.kernel.org/stable/c/50d5c02ab8e62325548bd3a6e6b758a9dcd6e7c3 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-59481 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-74334)Record last updated .