High 7.8Published Sep 17, 2026

CVE-2026-90308RDMA/erdma: Hold QP references for AE and CM processing

Updated under an hour ago (Oct 28, 2026, 5:30 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	155055771704f8cbb5c176a4309b7dc30a50450c builds before 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8; 155055771704f8cbb5c176a4309b7dc30a50450c builds before 6e32f84b63c054e09392153125d7202abab2d14b; from 155055771704f8cbb5c176a4309b7dc30a50450c before ec987c0654651036dad6a42f7fa2a6d7c16a3687; from 155055771704f8cbb5c176a4309b7dc30a50450c before c92686867638cda954fdb2bdbac8a75e3aa6eaae; from 155055771704f8cbb5c176a4309b7dc30a50450c before a52eeff32024f190b3bdc99088c7becccd4fa60b	CNA record

References

References

https://git.kernel.org/stable/c/233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8
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.