{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0581",
  "published": "2026-11-09T16:32:57Z",
  "modified": "2026-11-09T16:09:26Z",
  "summary": "Updated glibc package fixes security vulnerabilities",
  "details": "Passing an effectively empty string to the `,ccs=` syntax extension of\nthe mode argument in the `fopen` function in the GNU C Library version\n2.45 or earlier may result in a heap buffer overflow when the mode\nstring input to the function is attacker controlled. This usage pattern\nis not seen in applications in common GNU/Linux distributions and\napplications that process user-supplied values for `ccs` should not pass\nthem through without validation. (CVE-2026-18374)\nStack overflow in nscd due to unbounded alloca use. (CVE-2026-89092)\nAssertion failure in the DNS stub resolver with a long search domain.\n(CVE-2026-8674)\nAT_SECURE programs may load attacker-controlled code via $ORIGIN.\n(CVE-2026-86805)\nAT_SECURE program buffer overflow via $ORIGIN processing.\n(CVE-2026-95818)\nDirectory traversal via the LANGUAGE environment variable.\n(CVE-2026-84243)\n",
  "upstream": [
    "CVE-2026-18374",
    "CVE-2026-89092",
    "CVE-2026-8674",
    "CVE-2026-86805",
    "CVE-2026-95818",
    "CVE-2026-84243"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0581.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=36255"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/08/27/6"
    },
    {
      "type": "WEB",
      "url": "https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=advisories/GLIBC-SA-2026-0015"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/09/11/2"
    },
    {
      "type": "REPORT",
      "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=34624"
    },
    {
      "type": "WEB",
      "url": "https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2026-0016"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/09/17/4"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/09/22/20"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/10/30/17"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "glibc",
        "purl": "pkg:rpm/mageia/glibc?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.42-11.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}