ALSA-2026:67910 (CVE-2026-63379)

Vulnerability from osv_almalinux – Published: 2026-09-16 00:00 – Updated: 2026-09-17 09:34 – Source website
VLAI
Summary
Important: libevent security update
Details

The libevent packages provide an abstract asynchronous event notification library.

Security Fix(es):

  • libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)
  • libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)
  • libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)
  • libevent: Libevent: Denial of Service via integer conversion error in evtag_unmarshal_header (CVE-2026-63384)
  • libevent evhttp: Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)
  • libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)
  • libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)
  • libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)

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.

References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent-devel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "AlmaLinux:9",
        "name": "libevent-doc"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.1.13-1.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "The libevent packages provide an abstract asynchronous event notification library.  \n\nSecurity Fix(es):  \n\n  * libevent: Libevent: Denial of Service via malformed RPC data (CVE-2026-63383)\n  * libevent: Libevent: Off-by-one stack buffer overflow leading to denial of service or data corruption (CVE-2026-63387)\n  * libevent: Libevent: Memory corruption due to use-after-free (CVE-2026-63381)\n  * libevent: Libevent: Denial of Service via integer conversion error in `evtag_unmarshal_header` (CVE-2026-63384)\n  * libevent ev[http:](http:) Multiple HTTP Parser Bugs Enable Request Smuggling (CVE-2026-63382)\n  * libevent: Libevent: Arbitrary code execution via heap out-of-bounds write in AF_UNIX handling (CVE-2026-63388)\n  * libevent: Libevent: HTTP header handling bugs create risk of access control bypass. (CVE-2026-63385)\n  * libevent: Libevent: HTTP header smuggling allows authorization bypass or cache poisoning (CVE-2026-63379)\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-2026:67910",
  "modified": "2026-09-17T09:34:32Z",
  "published": "2026-09-16T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:67910"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63379"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63381"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63382"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63383"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63384"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63385"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63387"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-63388"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520654"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520655"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520657"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520658"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520661"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520666"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/2520667"
    },
    {
      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/9/ALSA-2026-67910.html"
    }
  ],
  "related": [
    "CVE-2026-63379",
    "CVE-2026-63381",
    "CVE-2026-63382",
    "CVE-2026-63383",
    "CVE-2026-63384",
    "CVE-2026-63385",
    "CVE-2026-63387",
    "CVE-2026-63388"
  ],
  "schema_version": "1.7.0",
  "summary": "Important: libevent security update",
  "upstream": [
    "CVE-2026-63379",
    "CVE-2026-63381",
    "CVE-2026-63382",
    "CVE-2026-63383",
    "CVE-2026-63384",
    "CVE-2026-63385",
    "CVE-2026-63387",
    "CVE-2026-63388"
  ]
}



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