UBUNTU-CVE-2026-61915

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Source
https://ubuntu.com/security/CVE-2026-61915
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-61915
Upstream
  • CVE-2026-61915
Published
2026-09-09T14:00:00Z
Modified
2026-09-11T15:00:24Z
Severity
  • 4.2 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

VPATCH BYPARAM double-free: An authenticated calendar user could crash a Cyrus CalDAV worker with a PATCH containing PATCH-ACTION="BYPARAM@..." against a resource with two or more properties of the matched kind. The memory holding the selector would be freed once on each iteration over the properties.

References

Affected packages

Ubuntu:Pro:18.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

2.*
2.5.10-3build1
2.5.10-3build2
2.5.10-3ubuntu1
2.5.10-3ubuntu1.1
2.5.10-3ubuntu1.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cyrus-admin",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-caldav",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-clients",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-common",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-imapd",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-murder",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-nntpd",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-pop3d",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "cyrus-replication",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        },
        {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "2.5.10-3ubuntu1.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json"

Ubuntu:Pro:20.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

3.*
3.0.11-1
3.0.11-1build1
3.0.12-1
3.0.12-2
3.0.12-2ubuntu2
3.0.12-2ubuntu3
3.0.13-2ubuntu1
3.0.13-3ubuntu1
3.0.13-4ubuntu1
3.0.13-5
3.0.13-5ubuntu0.1~esm1
3.0.13-5ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cyrus-admin",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-clients",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-common",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-murder",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "cyrus-replication",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        },
        {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.0.13-5ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json"

Ubuntu:Pro:22.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

3.*
3.2.6-2build1
3.4.2-2
3.4.2-2build1
3.4.3-2
3.4.3-3
3.4.3-3build2
3.4.3-3ubuntu0.1
3.4.3-3ubuntu0.1+esm1
3.4.3-3ubuntu0.3
3.4.3-3ubuntu0.3+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cyrus-admin",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-clients",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-common",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-murder",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "cyrus-replication",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        },
        {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.4.3-3ubuntu0.3+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json"

Ubuntu:Pro:24.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

3.*
3.8.0-5
3.8.1-1
3.8.1-1build1
3.8.1-1build2
3.8.1-3
3.8.1-3build3
3.8.2-1
3.8.2-1ubuntu0.1~esm1
3.8.2-1ubuntu0.2
3.8.2-1ubuntu0.2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cyrus-admin",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-clients",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-common",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-murder",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "cyrus-replication",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        },
        {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.8.2-1ubuntu0.2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json"

Ubuntu:26.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd?arch=source&distro=resolute

Affected ranges

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

Affected versions

3.*
3.10.2-1
3.12.1-2
3.12.1-2build1
3.12.1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "cyrus-admin",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-caldav",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-clients",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-common",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-imapd",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-murder",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-nntpd",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-pop3d",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "cyrus-replication",
            "binary_version": "3.12.1-3"
        },
        {
            "binary_name": "libcyrus-imap-perl",
            "binary_version": "3.12.1-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-61915.json"