UBUNTU-CVE-2026-80489

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Source
https://ubuntu.com/security/CVE-2026-80489
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-80489
Upstream
Downstream
USN (2)
Related
USN (2)
Published
2026-08-31T00:00:00Z
Modified
2026-09-24T02:01:00Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Converting crafted EUC_JISX0213 input to UCS-4 or the internal wide character encoding, for example with iconv, in the GNU C Library version 2.3 to 2.44 may result in the converter making no progress, causing the calling application to hang. Some EUC_JISX0213 sequences decode to two code points. If the output buffer has room for only the first one, the converter stores the second in the conversion state and returns E2BIG, but it never clears that pending character after emitting it on the next call. The converter then keeps emitting the pending character without consuming further input, so an application that retries the conversion loops forever. The input must be attacker controlled and the application must convert it with an output buffer small enough to split the two code points. Only the EUC_JISX0213 character set is affected, which is not commonly used. The related defect in SHIFT_JISX0213 converter is tracked separately as CVE-2026-77117.

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

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"
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

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.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

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"
Ubuntu:Pro:14.04:LTS
eglibc

Package

Name
eglibc
Purl
pkg:deb/ubuntu/eglibc?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.17-93ubuntu4
2.18-0ubuntu1
2.18-0ubuntu2
2.18-0ubuntu4
2.18-0ubuntu5
2.18-0ubuntu6
2.18-0ubuntu7
2.19-0ubuntu2
2.19-0ubuntu3
2.19-0ubuntu4
2.19-0ubuntu5
2.19-0ubuntu6
2.19-0ubuntu6.1
2.19-0ubuntu6.3
2.19-0ubuntu6.4
2.19-0ubuntu6.5
2.19-0ubuntu6.6
2.19-0ubuntu6.7
2.19-0ubuntu6.8
2.19-0ubuntu6.9
2.19-0ubuntu6.10
2.19-0ubuntu6.11
2.19-0ubuntu6.13
2.19-0ubuntu6.14
2.19-0ubuntu6.15
2.19-0ubuntu6.15+esm1
2.19-0ubuntu6.15+esm2
2.19-0ubuntu6.15+esm3
2.19-0ubuntu6.15+esm4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "eglibc-source",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc-bin",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc-dev-bin",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-amd64",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-armel",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-dev-amd64",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-dev-armel",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-dev-i386",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-dev-x32",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-i386",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-pic",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-prof",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "libc6-x32",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "multiarch-support",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        },
        {
            "binary_name":  "nscd",
            "binary_version":  "2.19-0ubuntu6.15+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"
Ubuntu:Pro:16.04:LTS
glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.21-0ubuntu4
2.21-0ubuntu5
2.21-0ubuntu6
2.23-0ubuntu1
2.23-0ubuntu2
2.23-0ubuntu3
2.23-0ubuntu4
2.23-0ubuntu5
2.23-0ubuntu6
2.23-0ubuntu7
2.23-0ubuntu9
2.23-0ubuntu10
2.23-0ubuntu11
2.23-0ubuntu11.2
2.23-0ubuntu11.3
2.23-0ubuntu11.3+esm1
2.23-0ubuntu11.3+esm2
2.23-0ubuntu11.3+esm3
2.23-0ubuntu11.3+esm5
2.23-0ubuntu11.3+esm6
2.23-0ubuntu11.3+esm7
2.23-0ubuntu11.3+esm8
2.23-0ubuntu11.3+esm9

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "glibc-source",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc-bin",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc-dev-bin",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-amd64",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-armel",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-dev-amd64",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-dev-armel",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-dev-i386",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-dev-s390",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-dev-x32",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-i386",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-pic",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-s390",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "libc6-x32",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "locales",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "locales-all",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "multiarch-support",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        },
        {
            "binary_name":  "nscd",
            "binary_version":  "2.23-0ubuntu11.3+esm9"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"
Ubuntu:Pro:18.04:LTS
glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.26-0ubuntu2
2.26-0ubuntu2.1
2.27-0ubuntu2
2.27-0ubuntu3
2.27-3ubuntu1
2.27-3ubuntu1.2
2.27-3ubuntu1.3
2.27-3ubuntu1.4
2.27-3ubuntu1.5
2.27-3ubuntu1.6
2.27-3ubuntu1.6+esm1
2.27-3ubuntu1.6+esm2
2.27-3ubuntu1.6+esm3
2.27-3ubuntu1.6+esm4
2.27-3ubuntu1.6+esm5
2.27-3ubuntu1.6+esm6

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "glibc-source",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc-bin",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc-dev-bin",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-amd64",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-armel",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-dev-amd64",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-dev-armel",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-dev-i386",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-dev-s390",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-dev-x32",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-i386",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-lse",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-pic",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-s390",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "libc6-x32",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "locales",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "locales-all",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "multiarch-support",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        },
        {
            "binary_name":  "nscd",
            "binary_version":  "2.27-3ubuntu1.6+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"
Ubuntu:Pro:20.04:LTS
glibc

Package

Name
glibc
Purl
pkg:deb/ubuntu/glibc?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.30-0ubuntu2
2.30-0ubuntu3
2.31-0ubuntu5
2.31-0ubuntu6
2.31-0ubuntu7
2.31-0ubuntu9
2.31-0ubuntu9.1
2.31-0ubuntu9.2
2.31-0ubuntu9.3
2.31-0ubuntu9.7
2.31-0ubuntu9.9
2.31-0ubuntu9.12
2.31-0ubuntu9.14
2.31-0ubuntu9.15
2.31-0ubuntu9.16
2.31-0ubuntu9.17
2.31-0ubuntu9.18
2.31-0ubuntu9.18+esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "glibc-source",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc-bin",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc-dev-bin",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-amd64",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-armel",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-dev-amd64",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-dev-armel",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-dev-i386",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-dev-s390",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-dev-x32",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-i386",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-lse",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-pic",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-prof",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-s390",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "libc6-x32",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "locales",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "locales-all",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        },
        {
            "binary_name":  "nscd",
            "binary_version":  "2.31-0ubuntu9.18+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-80489.json"