UBUNTU-CVE-2026-57455 (CVE-2026-57455)
Vulnerability from osv_ubuntu – Published: 2026-06-25 16:16 – Updated: 2026-07-02 20:49 – Source website
VLAI
Details
Vim is an open source, command line text editor. Prior to 9.2.0698, the single-byte branch of spell_soundfold_sofo() in src/spell.c translates a word through a spell file's SOFO (sound-folding) byte map into a caller-owned result buffer. Its copy loop advances the output index ri with no upper bound and terminates only on the input NUL, writing one byte per input byte into the MAXWLEN-element stack buffer the caller provides. A word longer than MAXWLEN, passed to soundfold() (or reached via sound-based spell suggestion) while a SOFO-based spell language is active, therefore writes past the end of that buffer. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0698.
Severity
7.8 (High)
N/A (UNKNOWN)
References
{
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"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",
"2:9.1.0016-1ubuntu7.11",
"2:9.1.0016-1ubuntu7.12",
"2:9.1.0016-1ubuntu7.13",
"2:9.1.0016-1ubuntu7.14",
"2:9.1.0016-1ubuntu7.15",
"2:9.1.0016-1ubuntu7.16"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "vim",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-athena",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-common",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-gtk3",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-gui-common",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-motif",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-nox",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-runtime",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "vim-tiny",
"binary_version": "2:9.1.0967-1ubuntu6.8"
},
{
"binary_name": "xxd",
"binary_version": "2:9.1.0967-1ubuntu6.8"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "vim",
"purl": "pkg:deb/ubuntu/vim@2:9.1.0967-1ubuntu6.8?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.1.0967-1ubuntu6.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:9.1.0967-1ubuntu4",
"2:9.1.0967-1ubuntu5",
"2:9.1.0967-1ubuntu6",
"2:9.1.0967-1ubuntu6.1",
"2:9.1.0967-1ubuntu6.2",
"2:9.1.0967-1ubuntu6.3",
"2:9.1.0967-1ubuntu6.4",
"2:9.1.0967-1ubuntu6.5",
"2:9.1.0967-1ubuntu6.6",
"2:9.1.0967-1ubuntu6.7"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "vim",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-common",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-gtk3",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-gui-common",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-motif",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-nox",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-runtime",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "vim-tiny",
"binary_version": "2:9.1.2141-1ubuntu4.6"
},
{
"binary_name": "xxd",
"binary_version": "2:9.1.2141-1ubuntu4.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "vim",
"purl": "pkg:deb/ubuntu/vim@2:9.1.2141-1ubuntu4.6?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2:9.1.2141-1ubuntu4.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2:9.1.0967-1ubuntu6",
"2:9.1.1882-1ubuntu1",
"2:9.1.1882-1ubuntu2",
"2:9.1.2141-1ubuntu1",
"2:9.1.2141-1ubuntu2",
"2:9.1.2141-1ubuntu4",
"2:9.1.2141-1ubuntu4.1",
"2:9.1.2141-1ubuntu4.2",
"2:9.1.2141-1ubuntu4.3",
"2:9.1.2141-1ubuntu4.5"
]
}
],
"aliases": [],
"details": "Vim is an open source, command line text editor. Prior to 9.2.0698, the single-byte branch of spell_soundfold_sofo() in src/spell.c translates a word through a spell file\u0027s SOFO (sound-folding) byte map into a caller-owned result buffer. Its copy loop advances the output index ri with no upper bound and terminates only on the input NUL, writing one byte per input byte into the MAXWLEN-element stack buffer the caller provides. A word longer than MAXWLEN, passed to soundfold() (or reached via sound-based spell suggestion) while a SOFO-based spell language is active, therefore writes past the end of that buffer. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0698.",
"id": "UBUNTU-CVE-2026-57455",
"modified": "2026-07-02T20:49:19Z",
"published": "2026-06-25T16:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-57455"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-57455"
},
{
"type": "REPORT",
"url": "https://github.com/vim/vim/security/advisories/GHSA-q8mh-6qm3-25g4"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8500-1"
}
],
"related": [
"USN-8500-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-57455"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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