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DEBIAN-CVE-2026-27940

Type: advisorySource: OSV1 source record

llama.cpp is an inference of several LLM models in C/C++. Prior to b8146, the gguf_init_from_file_impl() in gguf.cpp is vulnerable to an Integer overflow, leading to an undersized heap allocation. Using the subsequent fread() writes 528+ bytes of attacker-controlled data past the buffer boundary. This is a bypass of a similar bug in the same file - CVE-2025-53630, but the fix overlooked some areas. This vulnerability is fixed in b8146.

Announced Source revision 1
Original source ↗

DEBIAN-CVE-2026-27940

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-27940

llama.cpp

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Affected versions
5151+dfsg-1~exp2

Source reference: /affected/0/versions

5151+dfsg-1~exp3

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5318+dfsg-1

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5318+dfsg-2

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5713+dfsg-1

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5760+dfsg-1

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5760+dfsg-2

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5760+dfsg-3

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5760+dfsg-4

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5882+dfsg-1

Source reference: /affected/0/versions

5882+dfsg-2

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5882+dfsg-3

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5882+dfsg-3~exp1

Source reference: /affected/0/versions

5882+dfsg-3~exp2

Source reference: /affected/0/versions

5882+dfsg-3~exp3

Source reference: /affected/0/versions

5882+dfsg-4

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6641+dfsg-1

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6641+dfsg-2

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6641+dfsg-3

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7593+dfsg-1

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7593+dfsg-2

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7593+dfsg-3

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7965+dfsg-1

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8064+dfsg-1

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8064+dfsg-2

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Fixed versions
8461+dfsg-1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "8461+dfsg-1"
          }
        ]
      }
    ],
    "package": {
      "name": "llama.cpp",
      "purl": "pkg:deb/debian/llama.cpp?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "5151+dfsg-1~exp2",
      "5151+dfsg-1~exp3",
      "5318+dfsg-1",
      "5318+dfsg-2",
      "5713+dfsg-1",
      "5760+dfsg-1",
      "5760+dfsg-2",
      "5760+dfsg-3",
      "5760+dfsg-4",
      "5882+dfsg-1",
      "5882+dfsg-2",
      "5882+dfsg-3",
      "5882+dfsg-3~exp1",
      "5882+dfsg-3~exp2",
      "5882+dfsg-3~exp3",
      "5882+dfsg-4",
      "6641+dfsg-1",
      "6641+dfsg-2",
      "6641+dfsg-3",
      "7593+dfsg-1",
      "7593+dfsg-2",
      "7593+dfsg-3",
      "7965+dfsg-1",
      "8064+dfsg-1",
      "8064+dfsg-2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-27940.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#56324 · Revision 1
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Publisher date
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