CVE-2026-90308
RDMA/erdma: Hold QP references for AE and CM processing
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 17, 2026 |
| Last Updated | Oct 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
155055771704f8cbb5c176a4309b7dc30a50450c < 92101d7bd67cf313d65baede27118614a283f6bf 155055771704f8cbb5c176a4309b7dc30a50450c < 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8 155055771704f8cbb5c176a4309b7dc30a50450c < 6e32f84b63c054e09392153125d7202abab2d14b 155055771704f8cbb5c176a4309b7dc30a50450c < ec987c0654651036dad6a42f7fa2a6d7c16a3687 155055771704f8cbb5c176a4309b7dc30a50450c < c92686867638cda954fdb2bdbac8a75e3aa6eaae 155055771704f8cbb5c176a4309b7dc30a50450c < a52eeff32024f190b3bdc99088c7becccd4fa60b
Linux / Linux
6.0
References
git.kernel.org: https://git.kernel.org/stable/c/92101d7bd67cf313d65baede27118614a283f6bf git.kernel.org: https://git.kernel.org/stable/c/233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8 git.kernel.org: https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b git.kernel.org: https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687 git.kernel.org: https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae git.kernel.org: https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b