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Race Condition Affecting kernel-uek package, versions <0:2.6.39-400.311.1.el5uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-ORACLE5-KERNELUEK-2544462
  • published10 Apr 2022
  • disclosed12 Apr 2019
Report a new vulnerability Found a mistake?

Introduced: 12 Apr 2019

CVE-2019-11190  (opens in a new tab)
CWE-362  (opens in a new tab)

How to fix?

Upgrade Oracle:5 kernel-uek to version 0:2.6.39-400.311.1.el5uek or higher.
This issue was patched in ELSA-2019-4646.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat.

References