crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.51 % · percentile 43 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Deferred
Description
In the Linux kernel, the following vulnerability has been resolved: crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui() During NVMeTCP Authentication a controller can trigger a kernel oops by specifying the 8192 bit Diffie Hellman group and passing a correctly sized, but zeroed Diffie Hellamn value. mpi_cmp_ui() was detecting this if the second parameter was 0, but 1 is passed from dh_is_pubkey_valid(). This causes the null pointer u->d to be dereferenced towards the end of mpi_cmp_ui()
References
- https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6
- https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0
- https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f
- https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906
- https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d
- https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650
- https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776
- https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2023-60089
- GCVE · GCVE-0-2023-53817
CERT-FR advisories
- CERTFR-2026-AVI-0369 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0329 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < fde791e8a96a64ea7b0ad2440e43586447a209c6 ; affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < ae63e84ffda74267bf7277c38415ba38389229a0 ; affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 61f5453e9706e99713825594e0c8f9031485fb5f ; affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 0fc7147c694394f8a8cbc19570c6bc918cac0906 ; affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < 67589d247909043e94d2dd5fb590958e0f99d58d ; affected 12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 < d3ad023a39f1127dcfd331c562673355dc078650 |
| Linux · Linux | affected 3.7 ; unaffected 0 < 3.7 ; unaffected 4.14.326 ≤ 4.14.* ; unaffected 4.19.295 ≤ 4.19.* ; unaffected 5.4.257 ≤ 5.4.* ; unaffected 5.10.197 ≤ 5.10.* |
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 |