Incorrect Conversion between Numeric Types Affecting kernel-uek-devel package, versions <0:5.4.17-2102.200.13.el7uek


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (22nd percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEKDEVEL-2598951
  • published10 Apr 2022
  • disclosed10 May 2021

Introduced: 10 May 2021

CVE-2020-28588  (opens in a new tab)
CWE-681  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek-devel to version 0:5.4.17-2102.200.13.el7uek or higher.
This issue was patched in ELSA-2021-9140.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek-devel package and not the kernel-uek-devel package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1