Vulnerability in Linux Kernel

CVE-2020-28588

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.5th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2020-28588: held from 0.011 to 0.011.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

  • Linux Kernel — versions 5.4.66, 5.9.8, 5.10
  • Linux Kernel — versions Linux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-28588?
CVE-2020-28588 is a medium-severity vulnerability in Linux Kernel, classified under Incorrect Conversion between Numeric Types. CVSS score: 5.5/10. Published 2021-05-10.
How severe is CVE-2020-28588?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2020-28588 known to be exploited?
15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.