Out-of-bounds write in Linux kernel - CVE-2018-10883
Published: July 30, 2018 / Updated: June 1, 2020
Vulnerability identifier: #VU28377
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-10883
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local authenticated user to perform a denial of service (DoS) attack.
A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write in jbd2_journal_dirty_metadata(), a denial of service, and a system crash by mounting and operating on a crafted ext4 filesystem image.
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-2018-10883
Install update from vendor's website.
Linux kernel - addressed in versions 4.4.164, 4.9.135, 4.14.55, 4.17.6
kernel-alt (Red Hat package) - update to 4.14.0-115.el7a
kernel-alt (Red Hat package) - update to 4.14.0-115.el7a
External References
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.55
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.17.6
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.140
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.135
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.164