CVEvulnerability
CVE-2023-53817
7.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2025-12-09
- Last modified
- 2026-08-04
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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/0fc7147c694394f8a8cbc19570c6bc918cac0906 git.kernel.org
- https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776 git.kernel.org
- https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f git.kernel.org
- https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d git.kernel.org
- https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d git.kernel.org
- https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0 git.kernel.org
- https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650 git.kernel.org
- https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6 git.kernel.org