UBUNTU-CVE-2026-33165

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Source
https://ubuntu.com/security/CVE-2026-33165
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33165
Upstream
Downstream
Related
Published
2026-03-20T21:17:00Z
Modified
2026-07-21T13:08:41Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.0 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

libde265 is an open source implementation of the h.265 video codec. Prior to version 1.0.17, a crafted HEVC bitstream causes an out-of-bounds heap write confirmed by AddressSanitizer. The trigger is a stale ctb_info.log2unitSize after an SPS change where PicWidthInCtbsY and PicHeightInCtbsY stay constant but Log2CtbSizeY changes, causing set_SliceHeaderIndex to index past the allocated image metadata array and write 2 bytes past the end of a heap allocation. This issue has been patched in version 1.0.17.

References

Affected packages

Ubuntu:24.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.15-1ubuntu0.1

Affected versions

1.*
1.0.12-2
1.0.13-1
1.0.15-1
1.0.15-1build1
1.0.15-1build2
1.0.15-1build3

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.15-1ubuntu0.1"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.15-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:25.10
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.0.15-1build5
1.0.16-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:Pro:16.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.2-2ubuntu0.16.04.1~esm6

Affected versions

1.*
1.0.2-1build1
1.0.2-2
1.0.2-2ubuntu0.16.04.1~esm1
1.0.2-2ubuntu0.16.04.1~esm2
1.0.2-2ubuntu0.16.04.1~esm3
1.0.2-2ubuntu0.16.04.1~esm4
1.0.2-2ubuntu0.16.04.1~esm5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm6"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.16.04.1~esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:Pro:18.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.2-2ubuntu0.18.04.1~esm6

Affected versions

1.*
1.0.2-2build1
1.0.2-2ubuntu0.18.04.1~esm1
1.0.2-2ubuntu0.18.04.1~esm2
1.0.2-2ubuntu0.18.04.1~esm3
1.0.2-2ubuntu0.18.04.1~esm4
1.0.2-2ubuntu0.18.04.1~esm5

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm6"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.2-2ubuntu0.18.04.1~esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:Pro:20.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.4-1ubuntu0.4+esm2

Affected versions

1.*
1.0.3-1build1
1.0.4-1
1.0.4-1build1
1.0.4-1ubuntu0.1
1.0.4-1ubuntu0.2
1.0.4-1ubuntu0.3
1.0.4-1ubuntu0.4
1.0.4-1ubuntu0.4+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.4-1ubuntu0.4+esm2"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.4-1ubuntu0.4+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:Pro:22.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.8-1ubuntu0.3+esm2

Affected versions

1.*
1.0.8-1
1.0.8-1ubuntu0.1
1.0.8-1ubuntu0.2
1.0.8-1ubuntu0.3
1.0.8-1ubuntu0.3+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.8-1ubuntu0.3+esm2"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.8-1ubuntu0.3+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"
Ubuntu:Pro:26.04:LTS
libde265

Package

Name
libde265
Purl
pkg:deb/ubuntu/libde265?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.16-1ubuntu0.1~esm1

Affected versions

1.*
1.0.16-1
1.0.16-1build1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libde265-0",
            "binary_version": "1.0.16-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libde265-examples",
            "binary_version": "1.0.16-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33165.json"