CVEvulnerability

CVE-2026-0799

8.7 HIGH Published 2026-09-05 Modified 2026-09-08 Official page ↗
Status
Awaiting Analysis
Published
2026-09-05
Last modified
2026-09-08
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.7 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
Weaknesses
CWE-125, CWE-129, CWE-787

Description

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.

Related

Weakness · CWE (3)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-129 Improper Validation of Array Index weakness
  • CWE-787 Out-of-bounds Write weakness

References