Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 155055771704f8cbb5c176a4309b7dc30a50450c before 233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8; affected 155055771704f8cbb5c176a4309b7dc30a50450c before 6e32f84b63c054e09392153125d7202abab2d14b; affected 155055771704f8cbb5c176a4309b7dc30a50450c before ec987c0654651036dad6a42f7fa2a6d7c16a3687; affected 155055771704f8cbb5c176a4309b7dc30a50450c before c92686867638cda954fdb2bdbac8a75e3aa6eaae; affected 155055771704f8cbb5c176a4309b7dc30a50450c before a52eeff32024f190b3bdc99088c7becccd4fa60b |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 6.6.160 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
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