USN-8737-2

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

Affected packages

Ubuntu:24.04:LTS / glibc

Package

Name: glibc
Purl: pkg:deb/ubuntu/glibc?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.39-0ubuntu8.9

Affected versions

2.*

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

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"
        }
    ]
}

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:24.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8737-2.json"