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RHSA-2026:30267

Vulnerability from csaf_redhat - Published: 2026-06-26 09:46 - Updated: 2026-09-07 00:17
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: vim: * vim-X11-9.2.725-1.hum1 (aarch64, x86_64) * vim-common-9.2.725-1.hum1 (aarch64, x86_64) * vim-data-9.2.725-1.hum1 (noarch) * vim-default-editor-9.2.725-1.hum1 (noarch) * vim-enhanced-9.2.725-1.hum1 (aarch64, x86_64) * vim-filesystem-9.2.725-1.hum1 (noarch) * vim-minimal-9.2.725-1.hum1 (aarch64, x86_64) * xxd-9.2.725-1.hum1 (aarch64, x86_64) * vim-9.2.725-1.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

A flaw was found in Vim, an open-source command-line text editor. A remote attacker could exploit this vulnerability by tricking a user into loading a specially crafted spell file. When the user invokes spell suggestion, the editor attempts to process the malicious file, leading to an out-of-bounds write that corrupts memory and causes the application to crash, resulting in a denial of service.

CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:vim-main@aarch64
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:vim-main@noarch
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:vim-main@src
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:vim-main@x86_64
Vendor Fix fix
Threats
Impact Moderate

A flaw was found in Vim, an open source command-line text editor. When opening a specially crafted encrypted file using the VimCrypt~04! or VimCrypt~05! methods, an attacker could trigger an unsigned length calculation error. This issue leads to an out-of-bounds read, causing Vim to crash and resulting in a denial of service.

CWE-125 - Out-of-bounds Read
Affected products
Fixed 4 products, the same list as for CVE-2026-55693
Threats
Impact Moderate

A memory corruption flaw in Vim allows an attacker to cause a Denial of Service (DoS). When a SOFO-based spell language is active, providing an excessively long word to the spell checker triggers a stack out-of-bounds write in the spell_soundfold_sofo() function, causing the editor to crash.

CWE-787 - Out-of-bounds Write
Affected products
Fixed 4 products, the same list as for CVE-2026-55693
Threats
Impact Moderate
References
URL Category
https://access.redhat.com/errata/RHSA-2026:30267 self
https://images.redhat.com/ external
https://access.redhat.com/security/cve/CVE-2026-55693 external
https://access.redhat.com/security/updates/classi… external
https://access.redhat.com/security/cve/CVE-2026-57455 external
https://access.redhat.com/security/cve/CVE-2026-57452 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-55693 self
https://bugzilla.redhat.com/show_bug.cgi?id=2492980 external
https://www.cve.org/CVERecord?id=CVE-2026-55693 external
https://nvd.nist.gov/vuln/detail/CVE-2026-55693 external
https://github.com/vim/vim/commit/a80874d9b84a010… external
https://github.com/vim/vim/releases/tag/v9.2.0653 external
https://github.com/vim/vim/security/advisories/GH… external
https://access.redhat.com/security/cve/CVE-2026-57452 self
https://bugzilla.redhat.com/show_bug.cgi?id=2492979 external
https://www.cve.org/CVERecord?id=CVE-2026-57452 external
https://nvd.nist.gov/vuln/detail/CVE-2026-57452 external
https://github.com/vim/vim/commit/c8777cec25dcfae… external
https://github.com/vim/vim/releases/tag/v9.2.0671 external
https://github.com/vim/vim/security/advisories/GH… external
https://access.redhat.com/security/cve/CVE-2026-57455 self
https://bugzilla.redhat.com/show_bug.cgi?id=2492968 external
https://www.cve.org/CVERecord?id=CVE-2026-57455 external
https://nvd.nist.gov/vuln/detail/CVE-2026-57455 external
https://github.com/vim/vim/commit/497f931f85339d1… external
https://github.com/vim/vim/releases/tag/v9.2.0698 external
https://github.com/vim/vim/security/advisories/GH… external

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      },
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          "text": "A flaw was found in Vim, an open-source command-line text editor. A remote attacker could exploit this vulnerability by tricking a user into loading a specially crafted spell file. When the user invokes spell suggestion, the editor attempts to process the malicious file, leading to an out-of-bounds write that corrupts memory and causes the application to crash, resulting in a denial of service.",
          "title": "Vulnerability description"
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        {
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          "text": "vim: Vim: Out-of-bounds Write in Spell File Word Count",
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        {
          "category": "other",
          "text": "This Moderate impact vulnerability in Vim\u0027s spell suggestion feature allows an attacker to cause a denial of service. By tricking a user into loading a specially crafted spell file and invoking spell suggestion, an out-of-bounds write can occur, leading to a crash of the editor. This requires user interaction and a malicious file, limiting its immediate exploitability.",
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          "details": "Moderate"
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      "discovery_date": "2026-06-25T16:02:14.943134+00:00",
      "ids": [
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          "text": "2492979"
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          "category": "description",
          "text": "A flaw was found in Vim, an open source command-line text editor. When opening a specially crafted encrypted file using the VimCrypt~04! or VimCrypt~05! methods, an attacker could trigger an unsigned length calculation error. This issue leads to an out-of-bounds read, causing Vim to crash and resulting in a denial of service.",
          "title": "Vulnerability description"
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          "title": "Statement"
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          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
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          "url": "https://access.redhat.com/errata/RHSA-2026:30267"
        },
        {
          "category": "workaround",
          "details": "Ensure the spell checker is turned off by running :set nospell within Vim. Do not open untrusted or suspicious files\u2014particularly those encrypted with libsodium methods (VimCrypt~04! or VimCrypt~05!)\u2014within the Vim editor. This prevents the execution of the vulnerable decryption routine",
          "product_ids": [
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            "availabilityImpact": "HIGH",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:vim-main@aarch64",
            "Red Hat Hardened Images:vim-main@noarch",
            "Red Hat Hardened Images:vim-main@src",
            "Red Hat Hardened Images:vim-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "vim: Vim: Out-of-bounds Read with libsodium-encrypted Files"
    },
    {
      "cve": "CVE-2026-57455",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "discovery_date": "2026-06-25T16:01:18.343208+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2492968"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A memory corruption flaw in Vim allows an attacker to cause a Denial of Service (DoS). When a SOFO-based spell language is active, providing an excessively long word to the spell checker triggers a stack out-of-bounds write in the spell_soundfold_sofo() function, causing the editor to crash.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "vim: Vim: Denial of Service via stack out-of-bounds write in spell_soundfold_sofo()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Moderate impact flaw in Vim, a command-line text editor, is due to a stack out-of-bounds write in the spell checker. Exploitation requires a user to open a specially crafted file or encounter a long word via spell suggestion while a SOFO-based spell language is active, leading to a Denial of Service. This is not a default configuration in most Red Hat environments, limiting the attack surface.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:vim-main@aarch64",
          "Red Hat Hardened Images:vim-main@noarch",
          "Red Hat Hardened Images:vim-main@src",
          "Red Hat Hardened Images:vim-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-57455"
        },
        {
          "category": "external",
          "summary": "RHBZ#2492968",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492968"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-57455",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-57455"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-57455",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57455"
        },
        {
          "category": "external",
          "summary": "https://github.com/vim/vim/commit/497f931f85339d175d7f69588dd249e8ccfed41b",
          "url": "https://github.com/vim/vim/commit/497f931f85339d175d7f69588dd249e8ccfed41b"
        },
        {
          "category": "external",
          "summary": "https://github.com/vim/vim/releases/tag/v9.2.0698",
          "url": "https://github.com/vim/vim/releases/tag/v9.2.0698"
        },
        {
          "category": "external",
          "summary": "https://github.com/vim/vim/security/advisories/GHSA-q8mh-6qm3-25g4",
          "url": "https://github.com/vim/vim/security/advisories/GHSA-q8mh-6qm3-25g4"
        }
      ],
      "release_date": "2026-06-25T15:22:37.949000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-26T09:46:19+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:vim-main@aarch64",
            "Red Hat Hardened Images:vim-main@noarch",
            "Red Hat Hardened Images:vim-main@src",
            "Red Hat Hardened Images:vim-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:30267"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue disable spell checking or avoid using SOFO-based spell files. This can be achieved globally by adding set nospell to your ~/.vimrc configuration file. Ensure your systems utilize standard UTF-8 encoding. This flaw is strictly confined to legacy 8-bit encodings and cannot be triggered under default Red Hat configurations.",
          "product_ids": [
            "Red Hat Hardened Images:vim-main@aarch64",
            "Red Hat Hardened Images:vim-main@noarch",
            "Red Hat Hardened Images:vim-main@src",
            "Red Hat Hardened Images:vim-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:vim-main@aarch64",
            "Red Hat Hardened Images:vim-main@noarch",
            "Red Hat Hardened Images:vim-main@src",
            "Red Hat Hardened Images:vim-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "vim: Vim: Denial of Service via stack out-of-bounds write in spell_soundfold_sofo()"
    }
  ]
}



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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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Detection rules are retrieved from Rulezet.

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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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