USN-8737-1

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Source
https://ubuntu.com/security/notices/USN-8737-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8737-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8737-1
Upstream
Related
Published
2026-09-08T15:17:47Z
Modified
2026-09-09T00:42:27Z
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

Affected packages

Ubuntu:22.04:LTS / glibc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.35-0ubuntu3.15

Affected versions

2.*
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

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"
        }
    ]
}

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"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8737-1.json"

Ubuntu:26.04:LTS / glibc

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.43-2ubuntu2.4

Affected versions

2.*
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

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"
        }
    ]
}

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"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8737-1.json"