alsa-2025:10630
Vulnerability from osv_almalinux
Published
2025-07-08 00:00
Modified
2025-07-10 13:05
Summary
Important: libxml2 security update
Details

The libxml2 library is a development toolbox providing the implementation of various XML standards.

Security Fix(es):

  • libxml: Heap use after free (UAF) leads to Denial of service (DoS) (CVE-2025-49794)
  • libxml: Null pointer dereference leads to Denial of service (DoS) (CVE-2025-49795)
  • libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796)
  • libxml2: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow in libxml2 (CVE-2025-6021)

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.

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libxml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.12.5-7.el10_0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libxml2-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.12.5-7.el10_0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "libxml2-static"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.12.5-7.el10_0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:10",
        "name": "python3-libxml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.12.5-7.el10_0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libxml2 library is a development toolbox providing the implementation of various XML standards.  \n\nSecurity Fix(es):  \n\n  * libxml: Heap use after free (UAF) leads to Denial of service (DoS) (CVE-2025-49794)\n  * libxml: Null pointer dereference leads to Denial of service (DoS) (CVE-2025-49795)\n  * libxml: Type confusion leads to Denial of service (DoS) (CVE-2025-49796)\n  * libxml2: Integer Overflow in xmlBuildQName() Leads to Stack Buffer Overflow in libxml2 (CVE-2025-6021)\n\n\nFor 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.\n",
  "id": "ALSA-2025:10630",
  "modified": "2025-07-10T13:05:05Z",
  "published": "2025-07-08T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2025:10630"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-49794"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-49795"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-49796"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-6021"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2372373"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2372379"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2372385"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2372406"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/10/ALSA-2025-10630.html"
    }
  ],
  "related": [
    "CVE-2025-49794",
    "CVE-2025-49795",
    "CVE-2025-49796",
    "CVE-2025-6021"
  ],
  "summary": "Important: libxml2 security update"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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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.