CVEvulnerability

CVE-2018-18445

7.8 HIGH Published 2018-10-17 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-10-17
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.2 HIGH — AV:L/AC:L/Au:N/C:C/I:C/A:C
Weaknesses
CWE-125

Description

In the Linux kernel 4.14.x, 4.15.x, 4.16.x, 4.17.x, and 4.18.x before 4.18.13, faulty computation of numeric bounds in the BPF verifier permits out-of-bounds memory accesses because adjust_scalar_min_max_vals in kernel/bpf/verifier.c mishandles 32-bit right shifts.

Affected configurations

• linux linux kernel (>= 4.14.9 < 4.14.75) • linux linux kernel (>= 4.15 < 4.18.13) • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 18.04 • canonical ubuntu linux 18.10 • redhat enterprise linux desktop 7.0 • redhat enterprise linux server 7.0 • redhat enterprise linux server 7.6 • redhat enterprise linux server aus 7.6 • redhat enterprise linux server eus 7.6 • redhat enterprise linux server tus 7.6 • redhat enterprise linux workstation 7.0

Related

Weakness · CWE (1)

  • CWE-125 Out-of-bounds Read weakness

Referenced by CWE · observed example (1)

  • CWE-1335 Incorrect Bitwise Shift of Integer weakness

References