Vulnerability DatabaseCVE-2026-31911
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CVE-2026-31911
Published:September 05, 2026
Updated:September 15, 2026
libpcap BPF interpreter calls abort() if it encounters a BPF instruction that has an invalid opcode. In particular uncommon use cases a crafted filter program can terminate the OS process.
Affected Packages
https://github.com/the-tcpdump-group/libpcap.git (GITHUB):
Affected version(s) >=libpcap-0.5.1 <libpcap-1.10.7
Fix Suggestion:
Update to version libpcap-1.10.7
Related Resources (4)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31911.json
https://nvd.nist.gov/vuln/detail/CVE-2026-31911
https://github.com/the-tcpdump-group/libpcap/
https://github.com/the-tcpdump-group/libpcap/commit/a715bcdde830299cba4171514385cb17ec19b6e9
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CVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Reachable Assertion
CWE-617
EPSS
Base Score:
0.10