DEBIAN-CVE-2026-5745

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Source
https://security-tracker.debian.org/tracker/CVE-2026-5745
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5745.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-5745
Upstream
  • CVE-2026-5745
Published
2026-04-07T16:16:32.307Z
Modified
2026-04-19T22:00:10.163496Z
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
Summary
[none]
Details

A flaw was found in libarchive. A NULL pointer dereference vulnerability exists in the ACL parsing logic, specifically within the archiveaclfromtextnl() function. When processing a malformed ACL string (such as a bare "d" or "default" tag without subsequent fields), the function fails to perform adequate validation before advancing the pointer. An attacker can exploit this by providing a maliciously crafted archive, causing an application utilizing the libarchive API (such as bsdtar) to crash, resulting in a Denial of Service (DoS).

References

Affected packages

Debian:11 / libarchive

Package

Name
libarchive
Purl
pkg:deb/debian/libarchive?arch=source

Affected ranges

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

Affected versions

3.*
3.4.3-2
3.4.3-2+deb11u1
3.4.3-2+deb11u2
3.4.3-2+deb11u3
3.5.2-1
3.6.0-1
3.6.2-1
3.7.2-1
3.7.2-1.1~exp1
3.7.2-1.1
3.7.2-2
3.7.2-2.1
3.7.4-1
3.7.4-1.1
3.7.4-2
3.7.4-3
3.7.4-4
3.8.4-1
3.8.5-1
3.8.6-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5745.json"

Debian:12 / libarchive

Package

Name
libarchive
Purl
pkg:deb/debian/libarchive?arch=source

Affected ranges

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

Affected versions

3.*
3.6.2-1
3.6.2-1+deb12u1
3.6.2-1+deb12u2
3.6.2-1+deb12u3
3.7.2-1
3.7.2-1.1~exp1
3.7.2-1.1
3.7.2-2
3.7.2-2.1
3.7.4-1
3.7.4-1.1
3.7.4-2
3.7.4-3
3.7.4-4
3.8.4-1
3.8.5-1
3.8.6-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5745.json"

Debian:13 / libarchive

Package

Name
libarchive
Purl
pkg:deb/debian/libarchive?arch=source

Affected ranges

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

Affected versions

3.*
3.7.4-4
3.8.4-1
3.8.5-1
3.8.6-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5745.json"

Debian:14 / libarchive

Package

Name
libarchive
Purl
pkg:deb/debian/libarchive?arch=source

Affected ranges

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

Affected versions

3.*
3.7.4-4
3.8.4-1
3.8.5-1
3.8.6-1

Ecosystem specific 

{
    "urgency": "unimportant"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-5745.json"