{"id":"CVE-2026-90292","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-90292","summary":"RDMA/siw: Fix use-after-free in siw_accept()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/siw: Fix use-after-free in siw_accept()\n\nsiw_accept() looks up the QP supplied by userspace. If that QP is\nalready in RTS, the function jumps to error cleanup before associating\nthe incoming CEP with it.\n\nThe cleanup tests whether qp->cep is non-NULL and assumes the current\ncall installed the association. However, qp->cep can point to the CEP\nof an existing connection. The cleanup then drops a reference from the\nincoming cep, not qp->cep. Once the incoming endpoint loses its\nremaining references, this can free it before the subsequent cep->qp\nstore, causing a use-after-free. It also clears the existing QP\nassociation.\n\nOnly release the association reference when qp->cep is the incoming\nCEP. This preserves an existing association and avoids accessing the\nfreed endpoint.","published":"2026-09-17T16:08:19.350Z","modified":"2026-09-19T03:47:25.768679663Z","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":"5.10.270"}],"fix":null,"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/561651d6a15588cee2040755f253faca2463415c"},{"type":"WEB","url":"https://git.kernel.org/stable/c/59de5502f32895ffe9c45530327ed997b90fdf06"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8f286a8094ee32c415f9ecd2c20765beb8a18c79"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a89d120615e711ce8fce551fd291c2f387666735"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a9394971825933074032794a5feee5211509c774"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b9e7d3d9fdb2bfcfb25d93529fdf766536b37c78"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d57db36e74cca4763e1c2c0c6eb9f84d19813879"},{"type":"WEB","url":"https://git.kernel.org/stable/c/de603f01d9ccf823e575b013ffd86ebedca9a8c5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90292.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90292"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-19T03:47:25.768679663Z"}}