RHSA-2026:0697

Vulnerability from csaf_redhat - Published: 2026-01-15 11:30 - Updated: 2026-01-19 15:57
Summary
Red Hat Security Advisory: gnupg2 security update

Notes

Topic
An update for gnupg2 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards. Security Fix(es): * GnuPG: GnuPG: Information disclosure and potential arbitrary code execution via out-of-bounds write (CVE-2025-68973) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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.
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          "text": "A flaw was found in GnuPG. An attacker can provide crafted input to the `armor_filter` function, which incorrectly increments an index variable, leading to an out-of-bounds write. This memory corruption vulnerability may allow for information disclosure and could potentially lead to arbitrary code execution.",
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          "title": "Vulnerability summary"
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          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat products. The flaw in GnuPG\u0027s `armor_filter` function allows an attacker with local access to provide crafted input, potentially leading to information disclosure and arbitrary code execution due to an out-of-bounds write. Exploitation requires high attack complexity.",
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        },
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          "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.",
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-68973"
        },
        {
          "category": "external",
          "summary": "RHBZ#2425966",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2425966"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-68973",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-68973"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-68973",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68973"
        },
        {
          "category": "external",
          "summary": "https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306",
          "url": "https://github.com/gpg/gnupg/blob/ff30683418695f5d2cc9e6cf8c9418e09378ebe4/g10/armor.c#L1305-L1306"
        },
        {
          "category": "external",
          "summary": "https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9",
          "url": "https://github.com/gpg/gnupg/commit/115d138ba599328005c5321c0ef9f00355838ca9"
        },
        {
          "category": "external",
          "summary": "https://gpg.fail/memcpy",
          "url": "https://gpg.fail/memcpy"
        },
        {
          "category": "external",
          "summary": "https://news.ycombinator.com/item?id=46403200",
          "url": "https://news.ycombinator.com/item?id=46403200"
        },
        {
          "category": "external",
          "summary": "https://www.openwall.com/lists/oss-security/2025/12/28/5",
          "url": "https://www.openwall.com/lists/oss-security/2025/12/28/5"
        }
      ],
      "release_date": "2025-12-28T16:19:11.019000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-01-15T11:30:44+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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          "restart_required": {
            "category": "none"
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          "url": "https://access.redhat.com/errata/RHSA-2026:0697"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, users should avoid processing untrusted or unverified input with GnuPG. Exercise caution when handling GnuPG-encrypted or signed data from unknown or suspicious sources, as specially crafted input could trigger the vulnerability. This operational control reduces the attack surface by limiting exposure to malicious data.",
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      "scores": [
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          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "GnuPG: GnuPG: Information disclosure and potential arbitrary code execution via out-of-bounds write"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.