DEBIAN-CVE-2026-0799

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Source
https://security-tracker.debian.org/tracker/CVE-2026-0799
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-0799
Upstream
Published
2026-09-05T19:16:55Z
Modified
2026-09-14T05:00:09Z
Severity
  • 8.7 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H CVSS Calculator
Summary
[none]
Details

In BPF instructions that load/store a value from/to a scratch memory register the register index is an unsigned 32-bit integer and must not exceed 15, but libpcap BPF interpreter does not validate the value. In particular uncommon use cases a crafted filter program can cause the interpreter to try reading and writing the OS process memory in the 16GiB starting at the current stack frame on 64-bit architectures and in the entire address space on 32-bit architectures.

References

Affected packages

Debian:12 / libpcap

Package

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

Affected ranges

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

Affected versions

1.*
1.10.3-1
1.10.4-1
1.10.4-2
1.10.4-3
1.10.4-4
1.10.4-4.1~exp1
1.10.4-4.1
1.10.4-5
1.10.4-5+hurd.1
1.10.5-1
1.10.5-2
1.10.6-1
1.10.6-2
1.10.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"

Debian:13 / libpcap

Package

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

Affected ranges

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

Affected versions

1.*
1.10.5-2
1.10.6-1
1.10.6-2
1.10.7-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"

Debian:14 / libpcap

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.7-1

Affected versions

1.*
1.10.5-2
1.10.6-1
1.10.6-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-0799.json"