Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path For non-SRQ QPs, the responder reads WQE fields directly from the shared queue buffer mapped into userspace. This allows a malicious user to modify fields like num_sge or sge entries while the kernel is processing the WQE, leading to out-of-bounds reads in rxe_resp_check_length() and copy_data(). Introduce get_recv_wqe() that validates num_sge and copies the WQE to a kernel-local buffer before processing, matching the approach already used for SRQ WQEs in get_srq_wqe(). The srq_wqe buffer is reused since SRQ and non-SRQ paths are mutually exclusive per QP.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before 2e60378fb3c8b51c94103bb40014c4fe38fa5033; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before 9fa785137303f7109c23dea779b8dedc67c9b531; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before 5420eebf3b3c162bfaf965f30e61cd1d689e5732; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 before d6ab440240a04b8737ee4c7bb21af9182e451733 |
| Linux / Linux | affected 4.8; unaffected 0 before 4.8; unaffected 6.1.178 through 6.1.*; unaffected 6.6.145 through 6.6.*; unaffected 6.12.97 through 6.12.*; unaffected 6.18.40 through 6.18.*; unaffected 7.1.5 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/2e60378fb3c8b51c94103bb40014c4fe38fa5033
- https://git.kernel.org/stable/c/fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78
- https://git.kernel.org/stable/c/9fa785137303f7109c23dea779b8dedc67c9b531
- https://git.kernel.org/stable/c/5420eebf3b3c162bfaf965f30e61cd1d689e5732
- https://git.kernel.org/stable/c/a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b
- https://git.kernel.org/stable/c/d6ab440240a04b8737ee4c7bb21af9182e451733
ADP enrichment
No English description supplied.
No references supplied.