CVE-2023-53817

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()

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/0fc7147c694394f8a8cbc19570c6bc918cac0906
https://git.kernel.org/stable/c/12ac013ad7ff0df066451e825801d805095b3776
https://git.kernel.org/stable/c/61f5453e9706e99713825594e0c8f9031485fb5f
https://git.kernel.org/stable/c/67589d247909043e94d2dd5fb590958e0f99d58d
https://git.kernel.org/stable/c/9e47a758b70167c9301d2b44d2569f86c7796f2d
https://git.kernel.org/stable/c/ae63e84ffda74267bf7277c38415ba38389229a0
https://git.kernel.org/stable/c/d3ad023a39f1127dcfd331c562673355dc078650
https://git.kernel.org/stable/c/fde791e8a96a64ea7b0ad2440e43586447a209c6

Configurations

No configuration.

History

No history.

Information

Published : 2025-12-09 01:16

Updated : 2026-08-04 10:19

NVD link : CVE-2023-53817

Mitre link : CVE-2023-53817

CVE.ORG link : CVE-2023-53817

JSON object : View

Products Affected

No product.

CWE

No CWE.

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This causes the null\npointer u->d to be dereferenced towards the end of mpi_cmp_ui()"}], "lastModified": "2026-08-04T10:19:22.557", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}