UBUNTU-CVE-2026-48102

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Source
https://ubuntu.com/security/CVE-2026-48102
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48102
Upstream
  • CVE-2026-48102
Published
2026-06-05T16:16:00Z
Modified
2026-06-12T09:04:20.235444568Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

7-Zip is a file archiver with a high compression ratio. Versions 9.11 through 26.00 contain a heap out-of-bounds read of up to 3 bytes in the UDF disc image handler's File Identifier Descriptor parser. In CFileId::Parse (CPP/7zip/Archive/Udf/UdfIn.cpp), after validating size < 38 + idLen + impLen and advancing processed to 38 + impLen + idLen, the alignment-padding loop reads p[processed] while incrementing up to 3 times to reach a 4-byte boundary, and the processed <= size bounds check only runs after the loop. When (38 + impLen + idLen) % 4 != 0 and 38 + impLen + idLen == size, the loop reads 1 to 3 bytes past the end of the exact-size heap buffer allocated via buf.Alloc((size_t)item.Size). The UDF handler is registered for .iso and .udf files and auto-detected by signature, and the OOB read triggers during Open() when listing or extracting a crafted UDF image. Impact is limited to information disclosure (a 1-bit oracle per OOB byte via open/fail behavior) and denial of service (crash under hardened allocators); there is no write primitive. Version 26.01 fixes the issue.

References

Affected packages

Ubuntu:14.04:LTS
p7zip

Package

Name
p7zip
Purl
pkg:deb/ubuntu/p7zip?arch=source&distro=trusty

Affected ranges

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

Affected versions

9.*
9.20.1~dfsg.1-4
9.20.1~dfsg.1-4+deb7u1build0.14.04.1
9.20.1~dfsg.1-4+deb7u2build0.14.04.1
9.20.1~dfsg.1-4+deb7u3build0.14.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "p7zip",
            "binary_version": "9.20.1~dfsg.1-4+deb7u3build0.14.04.1"
        },
        {
            "binary_name": "p7zip-full",
            "binary_version": "9.20.1~dfsg.1-4+deb7u3build0.14.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:16.04:LTS
p7zip

Package

Name
p7zip
Purl
pkg:deb/ubuntu/p7zip?arch=source&distro=xenial

Affected ranges

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

Affected versions

9.*
9.20.1~dfsg.1-4.2
9.20.1~dfsg.1-4.2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "p7zip",
            "binary_version": "9.20.1~dfsg.1-4.2ubuntu0.1"
        },
        {
            "binary_name": "p7zip-full",
            "binary_version": "9.20.1~dfsg.1-4.2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:18.04:LTS
p7zip

Package

Name
p7zip
Purl
pkg:deb/ubuntu/p7zip?arch=source&distro=bionic

Affected ranges

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

Affected versions

16.*
16.02+dfsg-4
16.02+dfsg-5
16.02+dfsg-6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "p7zip",
            "binary_version": "16.02+dfsg-6"
        },
        {
            "binary_name": "p7zip-full",
            "binary_version": "16.02+dfsg-6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:20.04:LTS
p7zip

Package

Name
p7zip
Purl
pkg:deb/ubuntu/p7zip?arch=source&distro=focal

Affected ranges

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

Affected versions

16.*
16.02+dfsg-7
16.02+dfsg-7build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "p7zip",
            "binary_version": "16.02+dfsg-7build1"
        },
        {
            "binary_name": "p7zip-full",
            "binary_version": "16.02+dfsg-7build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:22.04:LTS
p7zip

Package

Name
p7zip
Purl
pkg:deb/ubuntu/p7zip?arch=source&distro=jammy

Affected ranges

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

Affected versions

16.*
16.02+dfsg-8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "p7zip",
            "binary_version": "16.02+dfsg-8"
        },
        {
            "binary_name": "p7zip-full",
            "binary_version": "16.02+dfsg-8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:25.10
7zip

Package

Name
7zip
Purl
pkg:deb/ubuntu/7zip?arch=source&distro=questing

Affected ranges

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

Affected versions

24.*
24.09+dfsg-7
24.09+dfsg-8
25.*
25.00+dfsg-1
25.01+dfsg-1
25.01+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "7zip",
            "binary_version": "25.01+dfsg-2"
        },
        {
            "binary_name": "7zip-standalone",
            "binary_version": "25.01+dfsg-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:26.04:LTS
7zip

Package

Name
7zip
Purl
pkg:deb/ubuntu/7zip?arch=source&distro=resolute

Affected ranges

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

Affected versions

25.*
25.01+dfsg-2
25.01+dfsg-3
25.01+dfsg-4
25.01+dfsg-5
26.*
26.00+dfsg-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "7zip",
            "binary_version": "26.00+dfsg-1"
        },
        {
            "binary_name": "7zip-standalone",
            "binary_version": "26.00+dfsg-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:Pro:22.04:LTS
7zip

Package

Name
7zip
Purl
pkg:deb/ubuntu/7zip?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

21.*
21.03~beta+dfsg-6
21.04~beta+dfsg-1
21.06+dfsg-1
21.07+dfsg-1
21.07+dfsg-2
21.07+dfsg-3
21.07+dfsg-4
21.07+dfsg-4ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "7zip",
            "binary_version": "21.07+dfsg-4ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"
Ubuntu:Pro:24.04:LTS
7zip

Package

Name
7zip
Purl
pkg:deb/ubuntu/7zip?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

23.*
23.01+dfsg-3
23.01+dfsg-7
23.01+dfsg-8
23.01+dfsg-11
23.01+dfsg-11ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "7zip",
            "binary_version": "23.01+dfsg-11ubuntu0.1~esm1"
        },
        {
            "binary_name": "7zip-standalone",
            "binary_version": "23.01+dfsg-11ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48102.json"