{"id":"CVE-2026-90308","summary":"RDMA/erdma: Hold QP references for AE and CM processing","details":"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-\u003eqp_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.","modified":"2026-09-19T03:47:25.783380006Z","published":"2026-09-17T16:08:29.704Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90308.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90308.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90308"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"155055771704f8cbb5c176a4309b7dc30a50450c"},{"fixed":"6e32f84b63c054e09392153125d7202abab2d14b"},{"fixed":"ec987c0654651036dad6a42f7fa2a6d7c16a3687"},{"fixed":"c92686867638cda954fdb2bdbac8a75e3aa6eaae"},{"fixed":"a52eeff32024f190b3bdc99088c7becccd4fa60b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90308.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.0.0"},{"fixed":"6.12.110"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.52"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.6"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-90308.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}