Answer in brief
CVE-2023-53817 records a High severity (CVSS 7.5) vulnerability in crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-53817 records a High severity (CVSS 7.5) vulnerability in crypto: lib/mpi - avoid null pointer deref in mpi_cmp_ui(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <fde791e8a96a64ea7b0ad2440e43586447a209c6 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <ae63e84ffda74267bf7277c38415ba38389229a0 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <61f5453e9706e99713825594e0c8f9031485fb5f || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <0fc7147c694394f8a8cbc19570c6bc918cac0906 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <67589d247909043e94d2dd5fb590958e0f99d58d || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <d3ad023a39f1127dcfd331c562673355dc078650 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <12ac013ad7ff0df066451e825801d805095b3776 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <9e47a758b70167c9301d2b44d2569f86c7796f2d | fde791e8a96a64ea7b0ad2440e43586447a209c6, ae63e84ffda74267bf7277c38415ba38389229a0, 61f5453e9706e99713825594e0c8f9031485fb5f, 0fc7147c694394f8a8cbc19570c6bc918cac0906, 67589d247909043e94d2dd5fb590958e0f99d58d, d3ad023a39f1127dcfd331c562673355dc078650, 12ac013ad7ff0df066451e825801d805095b3776, 9e47a758b70167c9301d2b44d2569f86c7796f2d |
| Linux/Linuxgeneric | 3.7 | Not reported |
Published upstream
Dec 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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()
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <fde791e8a96a64ea7b0ad2440e43586447a209c6 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <ae63e84ffda74267bf7277c38415ba38389229a0 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <61f5453e9706e99713825594e0c8f9031485fb5f || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <0fc7147c694394f8a8cbc19570c6bc918cac0906 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <67589d247909043e94d2dd5fb590958e0f99d58d || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <d3ad023a39f1127dcfd331c562673355dc078650 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <12ac013ad7ff0df066451e825801d805095b3776 || >=12f008b6dc5ff1c822fdb2198d20e3dbdc92f3f5 <9e47a758b70167c9301d2b44d2569f86c7796f2d | fde791e8a96a64ea7b0ad2440e43586447a209c6, ae63e84ffda74267bf7277c38415ba38389229a0, 61f5453e9706e99713825594e0c8f9031485fb5f, 0fc7147c694394f8a8cbc19570c6bc918cac0906, 67589d247909043e94d2dd5fb590958e0f99d58d, d3ad023a39f1127dcfd331c562673355dc078650, 12ac013ad7ff0df066451e825801d805095b3776, 9e47a758b70167c9301d2b44d2569f86c7796f2d |
| Linux/Linuxgeneric | 3.7 | Not reported |
Published upstream
Dec 9, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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()
Quoted source text, attributed separately from HOL analysis.