MSRC_CVE-2025-8058

Vulnerability from csaf_microsoft - Published: 2025-07-02 00:00 - Updated: 2025-10-22 01:01
Summary
The regcomp function in the GNU C library version from 2.4 to 2.41 is subject to a double free if some previous allocation fails. It can be accomplished either by a malloc failure or by using an interposed malloc that injects random malloc failures. The double free can allow buffer manipulation depending of how the regex is constructed. This issue affects all architectures and ABIs supported by the GNU C library.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
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        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
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        "category": "self",
        "summary": "CVE-2025-8058 The regcomp function in the GNU C library version from 2.4 to 2.41 is \nsubject to a double free if some previous allocation fails. It can be \naccomplished either by a malloc failure or by using an interposed malloc\n that injects random malloc failures. The double free can allow buffer \nmanipulation depending of how the regex is constructed. This issue \naffects all architectures and ABIs supported by the GNU C library. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-8058.json"
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        "url": "https://www.first.org/cvss"
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    ],
    "title": "The regcomp function in the GNU C library version from 2.4 to 2.41 is \nsubject to a double free if some previous allocation fails. It can be \naccomplished either by a malloc failure or by using an interposed malloc\n that injects random malloc failures. The double free can allow buffer \nmanipulation depending of how the regex is constructed. This issue \naffects all architectures and ABIs supported by the GNU C library.",
    "tracking": {
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      "cve": "CVE-2025-8058",
      "cwe": {
        "id": "CWE-415",
        "name": "Double Free"
      },
      "notes": [
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          "text": "glibc",
          "title": "Assigning CNA"
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-8058 The regcomp function in the GNU C library version from 2.4 to 2.41 is \nsubject to a double free if some previous allocation fails. It can be \naccomplished either by a malloc failure or by using an interposed malloc\n that injects random malloc failures. The double free can allow buffer \nmanipulation depending of how the regex is constructed. This issue \naffects all architectures and ABIs supported by the GNU C library. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-8058.json"
        }
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      "remediations": [
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          "date": "2025-10-22T01:01:52.000Z",
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      ],
      "title": "The regcomp function in the GNU C library version from 2.4 to 2.41 is \nsubject to a double free if some previous allocation fails. It can be \naccomplished either by a malloc failure or by using an interposed malloc\n that injects random malloc failures. The double free can allow buffer \nmanipulation depending of how the regex is constructed. This issue \naffects all architectures and ABIs supported by the GNU C library."
    }
  ]
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.