CVE-2020-28588
Linux Kernel
MEDIUM 4.0
At a glance
- Source
- NVD
- EPSS
- EPSS 1.10 % · percentile 66 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- talos
- NVD status
- Modified
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.
Weaknesses (CWE)
- CWE-681 — Incorrect Conversion between Numeric Types
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.0 | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | talos |
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 4.0 | CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N | NVD · talos-cna@cisco.com (Secondary) |
| CVSS 2.0 | LOW 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-20986
- GCVE · GCVE-0-2020-28588
CERT-FR advisories
- CERTFR-2021-AVI-149 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:5.4.66:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.9.8:*:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:5.10:rc4:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux Kernel | affected Linux Kernel v5.10-rc4,Linux Kernel v5.4.66,Linux Kernel v5.9.8 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |