{"id":"CVE-2026-90308","aliases":[],"url":"https://o3.security/vulnerability/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->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.","published":"2026-09-17T16:08:29.704Z","modified":"2026-09-19T03:47:25.783380006Z","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Linux","name":"Kernel","fixedVersion":"6.12.110"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:25.783380006Z"}}