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usn-8737-1
Vulnerability from osv_ubuntu
Published
2026-09-08 15:17
Modified
2026-09-08 15:17
Summary
glibc vulnerabilities
Details

It was discovered that GNU C Library had a buffer overflow in the strfmon function when handling right-justification padding. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-19499)

It was discovered that GNU C Library had an out-of-bounds stack array access in the tdelete function. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-19542)

It was discovered that GNU C Library incorrectly handled memory when calling wordexp with the WRDE_APPEND flag. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-6368)

It was discovered that GNU C Library had a stack overflow in the wordexp function when expanding paths beginning with a tilde followed by a long username. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-6791)

It was discovered that GNU C Library had a hang in the SHIFT_JISX0213 character set converter. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-77117)

It was discovered that GNU C Library had a hang in the EUC_JISX0213 character set converter. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-80489)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-6368",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:Green",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-6791",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:L/SA:H/E:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19542",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77117",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-80489",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "glibc-source",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc-devtools",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-prof",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-s390",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "locales",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "locales-all",
            "binary_version": "2.35-0ubuntu3.15"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.35-0ubuntu3.15"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "glibc",
        "purl": "pkg:deb/ubuntu/glibc@2.35-0ubuntu3.15?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.35-0ubuntu3.15"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.34-0ubuntu3",
        "2.35-0ubuntu1",
        "2.35-0ubuntu3",
        "2.35-0ubuntu3.1",
        "2.35-0ubuntu3.3",
        "2.35-0ubuntu3.4",
        "2.35-0ubuntu3.5",
        "2.35-0ubuntu3.6",
        "2.35-0ubuntu3.7",
        "2.35-0ubuntu3.8",
        "2.35-0ubuntu3.9",
        "2.35-0ubuntu3.10",
        "2.35-0ubuntu3.11",
        "2.35-0ubuntu3.12",
        "2.35-0ubuntu3.13",
        "2.35-0ubuntu3.14"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-6368",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/S:P/AU:Y/U:Green",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-6791",
              "severity": [
                {
                  "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:L/SA:H/E:U",
                  "type": "CVSS_V4"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19499",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19542",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77117",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-80489",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:26.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "glibc-source",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc-devtools",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc-gconv-modules-extra",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "locales",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "locales-all",
            "binary_version": "2.43-2ubuntu2.4"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.43-2ubuntu2.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "glibc",
        "purl": "pkg:deb/ubuntu/glibc@2.43-2ubuntu2.4?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.43-2ubuntu2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.42-0ubuntu3",
        "2.42-2ubuntu1",
        "2.42-2ubuntu2",
        "2.42-2ubuntu4",
        "2.42-2ubuntu5",
        "2.43-2ubuntu1",
        "2.43-2ubuntu2",
        "2.43-2ubuntu2.3"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that GNU C Library had a buffer overflow in the strfmon\nfunction when handling right-justification padding. An attacker could\npossibly use this issue to cause a denial of service or execute arbitrary\ncode. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-19499)\n\nIt was discovered that GNU C Library had an out-of-bounds stack array\naccess in the tdelete function. An attacker could possibly use this issue\nto cause a denial of service or execute arbitrary code. (CVE-2026-19542)\n\nIt was discovered that GNU C Library incorrectly handled memory when\ncalling wordexp with the WRDE_APPEND flag. An attacker could possibly use\nthis issue to cause a denial of service. (CVE-2026-6368)\n\nIt was discovered that GNU C Library had a stack overflow in the wordexp\nfunction when expanding paths beginning with a tilde followed by a long\nusername. An attacker could possibly use this issue to cause a denial of\nservice or execute arbitrary code. (CVE-2026-6791)\n\nIt was discovered that GNU C Library had a hang in the SHIFT_JISX0213\ncharacter set converter. An attacker could possibly use this issue to cause\na denial of service. (CVE-2026-77117)\n\nIt was discovered that GNU C Library had a hang in the EUC_JISX0213\ncharacter set converter. An attacker could possibly use this issue to cause\na denial of service. (CVE-2026-80489)",
  "id": "USN-8737-1",
  "modified": "2026-09-08T15:17:47Z",
  "published": "2026-09-08T15:17:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8737-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-6368"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-6791"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19499"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-19542"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-77117"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-80489"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "glibc vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2026-6368",
    "UBUNTU-CVE-2026-6791",
    "UBUNTU-CVE-2026-19499",
    "UBUNTU-CVE-2026-19542",
    "UBUNTU-CVE-2026-77117",
    "UBUNTU-CVE-2026-80489"
  ]
}



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