High
llama.cpp — security advisory
llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.
- Products
- llama.cpp
- Affected versions
- 10438+dfsg-1, 10438+dfsg-1ubuntu1, 5318+dfsg-1, 5318+dfsg-2, 5713+dfsg-1, 5760+dfsg-1, 5760+dfsg-3, 5760+dfsg-4, 5882+dfsg-2, 8064+dfsg-1ubuntu1, 8681+dfsg-1, 9721+dfsg-1ubuntu1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33298
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:59 UTC · Revision 1
Source evidence
llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.
osv:UBUNTU-CVE-2026-33298
llama.cpp
Fixed versions: Not specified
llama.cpp
Fixed versions: Not specified
llama.cpp
Fixed versions: Not specified
Complete source record
{
"id": "f846c31491c597246c5876e800d206b774c70f4208d35777b36eefc3f32fd696",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-33298",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-33298",
"summary": "llama.cpp is an inference of several LLM models in C/C++. Prior to b7824, an integer overflow vulnerability in the `ggml_nbytes` function allows an attacker to bypass memory validation by crafting a GGUF file with specific tensor dimensions. This causes `ggml_nbytes` to return a significantly smaller size than required (e.g., 4MB instead of Exabytes), leading to a heap-based buffer overflow when the application subsequently processes the tensor. This vulnerability allows potential Remote Code Execution (RCE) via memory corruption. b7824 contains a fix.",
"evidence": "osv:UBUNTU-CVE-2026-33298",
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"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
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{
"type": "Ubuntu",
"score": "medium"
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{
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{
"binary_name": "llama.cpp-tools-extra",
"binary_version": "10438+dfsg-1ubuntu1"
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{
"binary_name": "python3-gguf",
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{
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"ecosystem": "Ubuntu:26.04:LTS"
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"versions": [
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"8681+dfsg-1"
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],
"modified": "2026-10-17T12:59:59.832824925Z",
"provider": "osv",
"upstream": [
"CVE-2026-33298"
],
"references": [
"https://ubuntu.com/security/CVE-2026-33298",
"https://www.cve.org/CVERecord?id=CVE-2026-33298",
"https://github.com/ggml-org/llama.cpp/releases/tag/b7824",
"https://github.com/ggml-org/llama.cpp/security/advisories/GHSA-96jg-mvhq-q7q7"
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},
"related_cves": [
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"evidence": "/upstream"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360090,
"published_at": "2026-03-24T01:17:00+00:00"
}