CVE-2026-90308RDMA/erdma: Hold QP references for AE and CM processing
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/erdma: Hold QP references for AE and CM processing AE QP fatal events and iWARP CM paths load QPs from dev->qp_xa and then use or reference them outside the xarray lock. erdma_destroy_qp() can drop the destroy-path reference and free QP resources while such a lookup is in flight. Add erdma_qp_get_by_qpn() to acquire a kref under the xarray lock with kref_get_unless_zero(). Remove the QP from the xarray before dropping the destroy-path reference so no new lookup can acquire it while destruction waits for existing users.
- 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
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 155055771704f8cbb5c176a4309b7dc30a50450c builds before 6e32f84b63c054e09392153125d7202abab2d14b; from 155055771704f8cbb5c176a4309b7dc30a50450c before ec987c0654651036dad6a42f7fa2a6d7c16a3687; from 155055771704f8cbb5c176a4309b7dc30a50450c before c92686867638cda954fdb2bdbac8a75e3aa6eaae; from 155055771704f8cbb5c176a4309b7dc30a50450c before a52eeff32024f190b3bdc99088c7becccd4fa60b | CNA record |
References
- https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b
- https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687
- https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae
- https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b
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.