DEBIAN-CVE-2026-121944

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Source
https://security-tracker.debian.org/tracker/CVE-2026-121944
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121944.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-121944
Upstream
Published
2026-11-04T13:17:29Z
Modified
2026-11-06T07:00:06Z
Severity
  • 6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
[none]
Details

sngrep through 1.9.0 contains an infinite loop vulnerability in capture_packet_reasm_ip() in src/capture.c that allows attackers to cause denial of service via crafted NFLOG TLVs. Attackers can supply a pcap file with link type NFLOG containing a non-payload TLV with length under 4, making the capture thread spin at full CPU and stop processing packets.

References

Affected packages

Debian:12 / sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.6.0-1
1.7.0-1
1.7.0-2~bpo12+1
1.7.0-2
1.8.0-1
1.8.1-1
1.8.2-1~bpo12+1
1.8.2-1
1.8.3-1~bpo13+1
1.8.3-1
1.8.4-1~bpo13+1
1.8.4-1
1.8.4-2
1.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121944.json"

Debian:13 / sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.8.2-1
1.8.3-1~bpo13+1
1.8.3-1
1.8.4-1~bpo13+1
1.8.4-1
1.8.4-2
1.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121944.json"

Debian:14 / sngrep

Package

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

Affected ranges

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

Affected versions

1.*
1.8.2-1
1.8.3-1~bpo13+1
1.8.3-1
1.8.4-1~bpo13+1
1.8.4-1
1.8.4-2
1.9.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121944.json"