CVE-2026-0799 (GCVE-0-2026-0799)

Vulnerability from cvelistv5 – Published: 2026-09-05 18:48 – Updated: 2026-09-08 18:20
VLAI
Title
OOBR and OOBW in libpcap before 1.10.7
Summary
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.
Severity
8.7 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:20 UTC
CWE
  • CWE-129 - Improper Validation of Array Index
  • CWE-125 - Out-of-bounds Read
  • CWE-787 - Out-of-bounds Write
Assigner
Tcpdump CNA under the mitre root
CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
The Tcpdump Group libpcap Affected: 0 , < 1.10.7 (semver)
guessed Create a notification for this product.
Credits
Mozilla via the Secure Open Source program Include Security Denis Ovsienko
Show details on NVD website
To clipboard 

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