RDMA/rxe: Copy WQE to local buffer in non-SRQ receive path (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-59524
- GCVE · GCVE-0-2026-74377
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1372 — Multiples vulnérabilités dans les produits SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1335 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1288 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1255 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1231 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < 2e60378fb3c8b51c94103bb40014c4fe38fa5033 ; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < fc72fd61cc8b2e2e3e92ae4c0e9cc30c9a7ecb78 ; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < 9fa785137303f7109c23dea779b8dedc67c9b531 ; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < 5420eebf3b3c162bfaf965f30e61cd1d689e5732 ; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < a211b7904aed365e4e4f08a48ec6e6dd1ea7b16b ; affected 8700e3e7c4857d28ebaa824509934556da0b3e76 < d6ab440240a04b8737ee4c7bb21af9182e451733 |
| Linux · Linux | affected 4.8 ; unaffected 0 < 4.8 ; unaffected 6.1.178 ≤ 6.1.* ; unaffected 6.6.145 ≤ 6.6.* ; unaffected 6.12.97 ≤ 6.12.* ; unaffected 6.18.40 ≤ 6.18.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |