CVE-2026-97413
RDMA/rtrs-srv: Fix integer underflow in process_read and process_write
At a glance
- Source
- NVD
- EPSS
- EPSS 0.50 % · percentile 43 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-srv: Fix integer underflow in process_read and process_write usr_len is read from a network-supplied message field (le16_to_cpu) and used to compute data_len = off - usr_len without validating that usr_len <= off. A malicious RDMA client can send usr_len > off causing an integer underflow, resulting in data_len wrapping to a huge size_t value which is then passed to the rdma_ev callback as a memory length, leading to out-of-bounds memory access. Fix by reading and validating usr_len <= off before rtrs_srv_get_ops_ids() in both process_read() and process_write(), ensuring the early return path acquires no reference and has no resource leak.
References
- https://git.kernel.org/stable/c/6b1e26e70d7ca9f0906af2283558a530eeb1f066
- https://git.kernel.org/stable/c/2c52b2afded988233cd4ccc185cf5147bbc77a76
- https://git.kernel.org/stable/c/b042b4947752df0b3d16e683ac09fb4f7f0e33e0
- https://git.kernel.org/stable/c/24ad03bfeda05fca04c56677e57fd3d6bc3e9978
- https://git.kernel.org/stable/c/c76e9123ab91a903396d26e6ab1b5caae5c6b149
- https://git.kernel.org/stable/c/54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | CRITICAL 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-86026
- GCVE · GCVE-0-2026-97413
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1375 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · 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-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 9cb837480424e78ed585376f944088246685aec3 < 6b1e26e70d7ca9f0906af2283558a530eeb1f066 ; affected 9cb837480424e78ed585376f944088246685aec3 < 2c52b2afded988233cd4ccc185cf5147bbc77a76 ; affected 9cb837480424e78ed585376f944088246685aec3 < b042b4947752df0b3d16e683ac09fb4f7f0e33e0 ; affected 9cb837480424e78ed585376f944088246685aec3 < 24ad03bfeda05fca04c56677e57fd3d6bc3e9978 ; affected 9cb837480424e78ed585376f944088246685aec3 < c76e9123ab91a903396d26e6ab1b5caae5c6b149 ; affected 9cb837480424e78ed585376f944088246685aec3 < 54bf38b27afc08a0eb6b732f9c14eb8a4bcb66b5 |
| Linux · Linux | affected 5.8 ; unaffected 0 < 5.8 ; unaffected 5.15.222 ≤ 5.15.* ; unaffected 6.1.189 ≤ 6.1.* ; unaffected 6.6.158 ≤ 6.6.* ; unaffected 6.12.111 ≤ 6.12.* |
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 |