UBUNTU-CVE-2026-68767

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Source
https://ubuntu.com/security/CVE-2026-68767
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-68767
Upstream
Published
2026-08-22T15:16:00Z
Modified
2026-09-02T19:36:07.814512889Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

hashcat's fgetl() function in src/filehandling.c writes a null terminator one byte past the caller's buffer when an input line is exactly the buffer length. Attackers can trigger this out-of-bounds heap write by providing a hash file, potfile, or wordlist containing a line of exactly HCBUFSIZ_LARGE bytes.

References

Affected packages

Ubuntu:18.04:LTS / hashcat

Package

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

Affected ranges

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

Affected versions

3.*
3.60-1
4.*
4.0.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.0.1-1",
            "binary_name": "hashcat"
        },
        {
            "binary_version": "4.0.1-1",
            "binary_name": "hashcat-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json"

Ubuntu:20.04:LTS / hashcat

Package

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

Affected ranges

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

Affected versions

5.*
5.1.0+ds1-1
5.1.0+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "5.1.0+ds1-2",
            "binary_name": "hashcat"
        },
        {
            "binary_version": "5.1.0+ds1-2",
            "binary_name": "hashcat-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json"

Ubuntu:22.04:LTS / hashcat

Package

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

Affected ranges

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

Affected versions

6.*
6.1.1+ds1-1
6.2.5+ds1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.2.5+ds1-2",
            "binary_name": "hashcat"
        },
        {
            "binary_version": "6.2.5+ds1-2",
            "binary_name": "hashcat-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json"

Ubuntu:24.04:LTS / hashcat

Package

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

Affected ranges

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

Affected versions

6.*
6.2.6+ds1-1
6.2.6+ds1-1build1
6.2.6+ds1-1build2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "6.2.6+ds1-1build2",
            "binary_name": "hashcat"
        },
        {
            "binary_version": "6.2.6+ds1-1build2",
            "binary_name": "hashcat-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json"

Ubuntu:26.04:LTS / hashcat

Package

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

Affected ranges

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

Affected versions

6.*
6.2.6+ds2-1
7.*
7.1.2+ds1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "7.1.2+ds1-3",
            "binary_name": "hashcat"
        },
        {
            "binary_version": "7.1.2+ds1-3",
            "binary_name": "hashcat-data"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-68767.json"