Out-of-bounds write in Linux kernel - CVE-2018-10880
Published: July 25, 2018 / Updated: April 1, 2019
Vulnerability identifier: #VU28382
CSH Severity: Low
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-10880
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.
Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system crash and a denial of service.
Affected software
Linux kernel
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Opensuse
kernel-alt (Red Hat package)
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for IBM System z (Structure A)
Opensuse
kernel-alt (Red Hat package)
How to mitigate CVE-2018-10880
Install update from vendor's website.
Linux kernel - update to 4.9.131
kernel-alt (Red Hat package) - update to 4.14.0-115.el7a
kernel-alt (Red Hat package) - update to 4.14.0-115.el7a