ubuntu-cve-2026-32249
Vulnerability from osv_ubuntu
Published
2026-03-12 20:16
Modified
2026-04-16 09:13
Summary
Details

Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim's NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state->out1->out without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.

Severity
5.3 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vim",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-athena",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-common",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-gtk3",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-gui-common",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-motif",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-nox",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-runtime",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "vim-tiny",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          },
          {
            "binary_name": "xxd",
            "binary_version": "2:9.1.0016-1ubuntu7.11"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "vim",
        "purl": "pkg:deb/ubuntu/vim@2:9.1.0016-1ubuntu7.11?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:9.1.0016-1ubuntu7.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:9.0.1672-1ubuntu2",
        "2:9.0.2087-1ubuntu1",
        "2:9.0.2116-1ubuntu1",
        "2:9.0.2116-1ubuntu2",
        "2:9.0.2184-0ubuntu1",
        "2:9.0.2189-1ubuntu1",
        "2:9.1.0-1ubuntu1",
        "2:9.1.0016-1ubuntu2",
        "2:9.1.0016-1ubuntu6",
        "2:9.1.0016-1ubuntu7",
        "2:9.1.0016-1ubuntu7.1",
        "2:9.1.0016-1ubuntu7.2",
        "2:9.1.0016-1ubuntu7.3",
        "2:9.1.0016-1ubuntu7.4",
        "2:9.1.0016-1ubuntu7.5",
        "2:9.1.0016-1ubuntu7.6",
        "2:9.1.0016-1ubuntu7.7",
        "2:9.1.0016-1ubuntu7.8",
        "2:9.1.0016-1ubuntu7.9",
        "2:9.1.0016-1ubuntu7.10"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "vim",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-athena",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-common",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-gtk3",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-gui-common",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-motif",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-nox",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-runtime",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "vim-tiny",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          },
          {
            "binary_name": "xxd",
            "binary_version": "2:9.1.0967-1ubuntu6.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "vim",
        "purl": "pkg:deb/ubuntu/vim@2:9.1.0967-1ubuntu6.2?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2:9.1.0967-1ubuntu6.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2:9.1.0967-1ubuntu4",
        "2:9.1.0967-1ubuntu5",
        "2:9.1.0967-1ubuntu6",
        "2:9.1.0967-1ubuntu6.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Vim is an open source, command line text editor. From 9.1.0011 to before 9.2.0137, Vim\u0027s NFA regex compiler, when encountering a collection containing a combining character as the endpoint of a character range (e.g. [0-0\\u05bb]), incorrectly emits the composing bytes of that character as separate NFA states. This corrupts the NFA postfix stack, resulting in NFA_START_COLL having a NULL out1 pointer. When nfa_max_width() subsequently traverses the compiled NFA to estimate match width for the look-behind assertion, it dereferences state-\u003eout1-\u003eout without a NULL check, causing a segmentation fault. This vulnerability is fixed in 9.2.0137.",
  "id": "UBUNTU-CVE-2026-32249",
  "modified": "2026-04-16T09:13:13Z",
  "published": "2026-03-12T20:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-32249"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-32249"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/vim/vim/security/advisories/GHSA-9phh-423r-778r"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8171-1"
    }
  ],
  "related": [
    "USN-8171-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-32249"
  ]
}



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