CVE-2026-90292

Summary

In the Linux kernel, the following vulnerability has been resolved:

RDMA/siw: Fix use-after-free in siw_accept()

siw_accept() looks up the QP supplied by userspace. If that QP is already in RTS, the function jumps to error cleanup before associating the incoming CEP with it.

The cleanup tests whether qp->cep is non-NULL and assumes the current call installed the association. However, qp->cep can point to the CEP of an existing connection. The cleanup then drops a reference from the incoming cep, not qp->cep. Once the incoming endpoint loses its remaining references, this can free it before the subsequent cep->qp store, causing a use-after-free. It also clears the existing QP association.

Only release the association reference when qp->cep is the incoming CEP. This preserves an existing association and avoids accessing the freed endpoint.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < d57db36e74cca4763e1c2c0c6eb9f84d19813879affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < 59de5502f32895ffe9c45530327ed997b90fdf06affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < a89d120615e711ce8fce551fd291c2f387666735affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < b9e7d3d9fdb2bfcfb25d93529fdf766536b37c78affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < 8f286a8094ee32c415f9ecd2c20765beb8a18c79affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < de603f01d9ccf823e575b013ffd86ebedca9a8c5affected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < 561651d6a15588cee2040755f253faca2463415caffected
LinuxLinux6c52fdc244b5ccc468006fd65a504d4ee33743c7 < a9394971825933074032794a5feee5211509c774affected
LinuxLinux5.3affected
LinuxLinux0 < 5.3unaffected
LinuxLinux5.10.270 <= 5.10.*unaffected
LinuxLinux5.15.221 <= 5.15.*unaffected
LinuxLinux6.1.188 <= 6.1.*unaffected
LinuxLinux6.6.157 <= 6.6.*unaffected
LinuxLinux6.12.110 <= 6.12.*unaffected
LinuxLinux6.18.52 <= 6.18.*unaffected
LinuxLinux7.2.6 <= 7.2.*unaffected
LinuxLinux7.3-rc1 <= *unaffected

Weaknesses

References