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Oracle Linux: CVE-2019-11190: ELSA-2019-4644: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

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Oracle Linux: CVE-2019-11190: ELSA-2019-4644: Unbreakable Enterprise kernel security update (IMPORTANT) (Multiple Advisories)

Severity
2
CVSS
(AV:L/AC:L/Au:S/C:P/I:N/A:N)
Published
04/03/2019
Created
05/18/2019
Added
05/16/2019
Modified
12/06/2024

Description

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. A flaw in the load_elf_binary() function in the Linux kernel allows a local attacker to leak the base address of .text and stack sections for setuid binaries and bypass ASLR because install_exec_creds() is called too late in this function.

Solution(s)

  • oracle-linux-upgrade-kernel-uek

References

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