VULNERABILITY INTELLIGENCE

CVE-2020-28588

CVSS score5.5 MEDIUM
EPSS probability1.10%
CISA KEVNot currently listed
Published2021-05-10
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.

Weakness classification

  • talos-cna@cisco.com: CWE-681
  • nvd@nist.gov: CWE-681

Primary references