{"id":"CVE-2026-90308","published":"2026-09-17T17:17:28.520","lastModified":"2026-09-18T18:17:52.833","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold QP references for AE and CM processing\n\nAE QP fatal events and iWARP CM paths load QPs from dev->qp_xa\nand then use or reference them outside the xarray lock.\nerdma_destroy_qp() can drop the destroy-path reference and free QP\nresources while such a lookup is in flight.\n\nAdd erdma_qp_get_by_qpn() to acquire a kref under the xarray\nlock with kref_get_unless_zero(). Remove the QP from the xarray\nbefore dropping the destroy-path reference so no new lookup can acquire\nit while destruction waits for existing users.","cvssScore":7.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b","tags":[]},{"url":"https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b","tags":[]},{"url":"https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae","tags":[]},{"url":"https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}