DEBIAN-CVE-2026-6862

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Source
https://security-tracker.debian.org/tracker/CVE-2026-6862
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6862.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-6862
Upstream
  • CVE-2026-6862
Published
2026-04-22T14:17:08Z
Modified
2026-09-22T08:47:28Z
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 libefiboot, a component of efivar. The device path node parser in libefiboot fails to validate that each node's Length field is at least 4 bytes, which is the minimum size for an EFI (Extensible Firmware Interface) device path node header. A local user could exploit this vulnerability by providing a specially crafted device path node. This can lead to infinite recursion, causing stack exhaustion and a process crash, resulting in a denial of service (DoS).

References

Affected packages

Debian:12 / efivar

Package

Name
efivar
Purl
pkg:deb/debian/efivar?arch=source&distro=bookworm

Affected ranges

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

Affected versions

Other
37-6
38-1
38-2
38-3
39-1
39-2~bpo13+1
39-2
38-3.*
38-3.1~exp1
38-3.1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6862.json"

Debian:13 / efivar

Package

Name
efivar
Purl
pkg:deb/debian/efivar?arch=source&distro=trixie

Affected ranges

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

Affected versions

38-3.*
38-3.1
Other
39-1
39-2~bpo13+1
39-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6862.json"

Debian:14 / efivar

Package

Name
efivar
Purl
pkg:deb/debian/efivar?arch=source&distro=forky

Affected ranges

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

Affected versions

38-3.*
38-3.1
Other
39-1
39-2~bpo13+1
39-2

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-6862.json"