PT-2016-6796 · Linux+4 · Linux Kernel+4

Cai Qian + 1 · Publicado 2016-06-22 · Atualizado 2019-12-27 · CVE-2016-6197

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Média

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 4.6

Description The issue is related to the OverlayFS filesystem implementation in the Linux kernel. It does not properly verify the upper dentry before proceeding with unlink and rename system-call processing. This allows local users to cause a denial of service (system crash) via a rename system call that specifies a self-hardlink.

Recommendations For Linux kernel versions prior to 4.6, update to version 4.6 or later to resolve the issue.

Correção

DoS

RCE

Enumeração de Fraquezas

CWE-20

Identificadores relacionados

ALT-PU-2016-1634

ALT-PU-2017-1330

CESA-2016_1847

CVE-2016-6197

RHSA-2016:1847

RHSA-2016:1875

RHSA-2016_1847

RHSA-2016_1875

USN-3070-1

USN-3070-2

USN-3070-3

USN-3070-4

Produtos afetados

Alt Linux

Centos

Linux Kernel

Red Hat

Ubuntu

Referências · 39

• https://github.com/torvalds/linux/commit/11f3710417d026ea2f4fcf362d866342c5274185 · Correção
• https://github.com/linux-test-project/ltp/blob/master/testcases/kernel/syscalls/rename/rename13.c · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2016-6197 · Nota de Segurança
• https://linux.oracle.com/errata/ELSA-2016-3587.html · Aviso do Fabricante
• http://ubuntu.com/usn/USN-3070-3 · Aviso do Fabricante
• https://osv.dev/vulnerability/DEBIAN-CVE-2016-6197 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2016-5828 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2016-5696 · Aviso do Fabricante
• https://security-tracker.debian.org/tracker/CVE-2016-6197 · Aviso do Fabricante
• http://oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html · Aviso do Fabricante
• https://ubuntu.com/security/notices/USN-3070-4 · Aviso do Fabricante
• https://ubuntu.com/security/CVE-2016-5728 · Aviso do Fabricante
• https://osv.dev/vulnerability/USN-3070-2 · Aviso do Fabricante
• https://osv.dev/vulnerability/USN-3070-3 · Aviso do Fabricante
• https://osv.dev/vulnerability/CVE-2016-6197 · Aviso do Fabricante