UBUNTU-CVE-2026-11850

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Source
https://ubuntu.com/security/CVE-2026-11850
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-11850
Upstream
  • CVE-2026-11850
Published
2026-06-11T10:16:00Z
Modified
2026-06-17T04:27:00Z
Severity
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

An integer underflow vulnerability was found in MIT krb5 in the berval2tldata() function in plugins/kdb/ldap/libkdbldap/ldapprincipal2.c. The function performs an unsigned subtraction (bvlen - 2) without a prior bounds check. When bvlen is 0 or 1, the subtraction wraps to a large value which is then truncated to uint16t, yielding 0xFFFE (65534) or 0xFFFF (65535). The subsequent malloc succeeds and memcpy reads up to 65534 bytes from a 0-1 byte buffer, resulting in a heap out-of-bounds read. The attack vector involves a malicious or compromised LDAP KDB backend returning a krbExtraData attribute with bv_len < 2, triggering the underflow when the KDC or kadmind reads principal data.

References

Affected packages

Ubuntu:20.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.17-6
1.17-6ubuntu3
1.17-6ubuntu4
1.17-6ubuntu4.1
1.17-6ubuntu4.2
1.17-6ubuntu4.3
1.17-6ubuntu4.4
1.17-6ubuntu4.6
1.17-6ubuntu4.7
1.17-6ubuntu4.8
1.17-6ubuntu4.9
1.17-6ubuntu4.11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libgssrpc4",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkdb5-9",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.17-6ubuntu4.11"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.17-6ubuntu4.11"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:22.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.18.3-6
1.18.3-7
1.19.2-0ubuntu1
1.19.2-1
1.19.2-2
1.19.2-2ubuntu0.1
1.19.2-2ubuntu0.2
1.19.2-2ubuntu0.3
1.19.2-2ubuntu0.4
1.19.2-2ubuntu0.5
1.19.2-2ubuntu0.6
1.19.2-2ubuntu0.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libgssrpc4",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkadm5clnt-mit12",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkadm5srv-mit12",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkdb5-10",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.19.2-2ubuntu0.7"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.19.2-2ubuntu0.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:24.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.20.1-3ubuntu1
1.20.1-5build1
1.20.1-6ubuntu1
1.20.1-6ubuntu2
1.20.1-6ubuntu2.1
1.20.1-6ubuntu2.2
1.20.1-6ubuntu2.3
1.20.1-6ubuntu2.4
1.20.1-6ubuntu2.5
1.20.1-6ubuntu2.6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libgssrpc4t64",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkadm5clnt-mit12",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkadm5srv-mit12",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkdb5-10t64",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.20.1-6ubuntu2.6"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.20.1-6ubuntu2.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:25.10
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.21.3-4ubuntu2
1.21.3-5ubuntu1
1.21.3-5ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libgssrpc4t64",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkadm5clnt-mit12",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkadm5srv-mit12",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkdb5-10t64",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.21.3-5ubuntu2"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.21.3-5ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:26.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.21.3-5ubuntu2
1.22.1-2
1.22.1-2ubuntu2
1.22.1-2ubuntu3
1.22.1-2ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libgssrpc4t64",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkadm5clnt-mit12",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkadm5srv-mit12",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkdb5-10t64",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.22.1-2ubuntu4"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.22.1-2ubuntu4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:Pro:14.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

1.*
1.10.1+dfsg-6.1ubuntu1
1.11.3+dfsg-3ubuntu2
1.12+dfsg-2ubuntu1
1.12+dfsg-2ubuntu2
1.12+dfsg-2ubuntu3
1.12+dfsg-2ubuntu4
1.12+dfsg-2ubuntu4.2
1.12+dfsg-2ubuntu5
1.12+dfsg-2ubuntu5.1
1.12+dfsg-2ubuntu5.2
1.12+dfsg-2ubuntu5.3
1.12+dfsg-2ubuntu5.4
1.12+dfsg-2ubuntu5.4+esm1
1.12+dfsg-2ubuntu5.4+esm2
1.12+dfsg-2ubuntu5.4+esm3
1.12+dfsg-2ubuntu5.4+esm4
1.12+dfsg-2ubuntu5.4+esm5
1.12+dfsg-2ubuntu5.4+esm6
1.12+dfsg-2ubuntu5.4+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libgssrpc4",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkadm5clnt-mit9",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkadm5srv-mit8",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkadm5srv-mit9",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkdb5-7",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:Pro:16.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

1.*
1.13.2+dfsg-2
1.13.2+dfsg-3
1.13.2+dfsg-4
1.13.2+dfsg-5
1.13.2+dfsg-5ubuntu1
1.13.2+dfsg-5ubuntu2
1.13.2+dfsg-5ubuntu2.1
1.13.2+dfsg-5ubuntu2.1+esm1
1.13.2+dfsg-5ubuntu2.2
1.13.2+dfsg-5ubuntu2.2+esm1
1.13.2+dfsg-5ubuntu2.2+esm2
1.13.2+dfsg-5ubuntu2.2+esm3
1.13.2+dfsg-5ubuntu2.2+esm4
1.13.2+dfsg-5ubuntu2.2+esm5
1.13.2+dfsg-5ubuntu2.2+esm6
1.13.2+dfsg-5ubuntu2.2+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libgssrpc4",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkadm5clnt-mit9",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkadm5srv-mit9",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkdb5-8",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"
Ubuntu:Pro:18.04:LTS
krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

1.*
1.15.1-2
1.16-2
1.16-2build1
1.16-2ubuntu0.1
1.16-2ubuntu0.1+esm1
1.16-2ubuntu0.2
1.16-2ubuntu0.3
1.16-2ubuntu0.4
1.16-2ubuntu0.4+esm1
1.16-2ubuntu0.4+esm2
1.16-2ubuntu0.4+esm3
1.16-2ubuntu0.4+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "krb5-admin-server",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-gss-samples",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-k5tls",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-kdc",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-kdc-ldap",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-kpropd",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-locales",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-multidev",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-otp",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-pkinit",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "krb5-user",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libgssapi-krb5-2",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libgssrpc4",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libk5crypto3",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkadm5clnt-mit11",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkadm5srv-mit11",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkdb5-9",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkrad0",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkrb5-3",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        },
        {
            "binary_name": "libkrb5support0",
            "binary_version": "1.16-2ubuntu0.4+esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11850.json"