UBUNTU-CVE-2026-40553

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Source
https://ubuntu.com/security/CVE-2026-40553
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-40553
Upstream
  • CVE-2026-40553
Published
2026-07-13T13:16:00Z
Modified
2026-07-15T19:46:49.264923510Z
Severity
  • 5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:L/SI:L/SA:L CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Buffer overflow vulnerability has been found in "extension/readdir.c" program file of gawk (ftype() routine). This issue could be used to crash the program and potentially to achieve code execution, although the latter has not been confirmed to be feasible. It affects gawk in versions 5.4.0 and below.

References

Affected packages

Ubuntu:20.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:4.*
1:4.2.1+dfsg-1.1build1
1:5.*
1:5.0.1+dfsg-1
1:5.0.1+dfsg-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.0.1+dfsg-1ubuntu0.1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:22.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:5.*
1:5.1.0-1build1
1:5.1.0-1build2
1:5.1.0-1build3
1:5.1.0-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.1.0-1ubuntu0.1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:24.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:5.*
1:5.2.1-2
1:5.2.1-2build2
1:5.2.1-2build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.2.1-2build3",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:26.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:5.*
1:5.3.2-1build1
1:5.3.2-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:5.3.2-1ubuntu1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:Pro:14.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:4.*
1:4.0.1+dfsg-2.1ubuntu2
1:4.0.1+dfsg-2.1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:4.0.1+dfsg-2.1ubuntu2+esm1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:Pro:16.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:4.*
1:4.1.1+dfsg-1
1:4.1.3+dfsg-0.1
1:4.1.3+dfsg-0.1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:4.1.3+dfsg-0.1ubuntu0.1~esm1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"
Ubuntu:Pro:18.04:LTS
gawk

Package

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

Affected ranges

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

Affected versions

1:4.*
1:4.1.4+dfsg-1
1:4.1.4+dfsg-1build1
1:4.1.4+dfsg-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1:4.1.4+dfsg-1ubuntu0.1~esm1",
            "binary_name": "gawk"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-40553.json"