USN-8737-2 (UBUNTU-CVE-2026-6368)

Vulnerability from osv_ubuntu – Published: 2026-09-10 11:25 – Updated: 2026-09-17 10:33 – Source website
VLAI
Summary
glibc vulnerabilities
Details

USN-8737-1 fixed vulnerabilities in GNU C Library. This update provides the corresponding fixes for Ubuntu 24.04 LTS.

Original advisory 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-2026-19499",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-19542",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-77117",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-80489",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:24.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "glibc-source",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc-bin",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc-dev-bin",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc-devtools",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-amd64",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-dev-amd64",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-dev-i386",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-dev-s390",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-dev-x32",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-i386",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-s390",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "libc6-x32",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "locales",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "locales-all",
            "binary_version": "2.39-0ubuntu8.9"
          },
          {
            "binary_name": "nscd",
            "binary_version": "2.39-0ubuntu8.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "glibc",
        "purl": "pkg:deb/ubuntu/glibc@2.39-0ubuntu8.9?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.39-0ubuntu8.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.38-1ubuntu6",
        "2.38-3ubuntu1",
        "2.39-0ubuntu1",
        "2.39-0ubuntu2",
        "2.39-0ubuntu6",
        "2.39-0ubuntu8",
        "2.39-0ubuntu8.1",
        "2.39-0ubuntu8.2",
        "2.39-0ubuntu8.3",
        "2.39-0ubuntu8.4",
        "2.39-0ubuntu8.5",
        "2.39-0ubuntu8.6",
        "2.39-0ubuntu8.7",
        "2.39-0ubuntu8.8"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8737-1 fixed vulnerabilities in GNU C Library. This update provides\nthe corresponding fixes for Ubuntu 24.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that GNU C Library had a buffer overflow in the strfmon\n function when handling right-justification padding. An attacker could\n possibly use this issue to cause a denial of service or execute arbitrary\n code. This issue only affected Ubuntu 26.04 LTS. (CVE-2026-19499)\n\n It was discovered that GNU C Library had an out-of-bounds stack array\n access in the tdelete function. An attacker could possibly use this issue\n to cause a denial of service or execute arbitrary code. (CVE-2026-19542)\n\n It was discovered that GNU C Library incorrectly handled memory when\n calling wordexp with the WRDE_APPEND flag. An attacker could possibly use\n this issue to cause a denial of service. (CVE-2026-6368)\n\n It was discovered that GNU C Library had a stack overflow in the wordexp\n function when expanding paths beginning with a tilde followed by a long\n username. An attacker could possibly use this issue to cause a denial of\n service or execute arbitrary code. (CVE-2026-6791)\n\n It was discovered that GNU C Library had a hang in the SHIFT_JISX0213\n character set converter. An attacker could possibly use this issue to cause\n a denial of service. (CVE-2026-77117)\n\n It was discovered that GNU C Library had a hang in the EUC_JISX0213\n character set converter. An attacker could possibly use this issue to cause\n a denial of service. (CVE-2026-80489)",
  "id": "USN-8737-2",
  "modified": "2026-09-17T10:33:46Z",
  "published": "2026-09-10T11:25:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8737-2"
    },
    {
      "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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