SB2018072623 - Use-after-free in Linux kernel
Published: July 26, 2018 Updated: June 1, 2020
Security Bulletin ID
SB2018072623
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2018-10879)
The vulnerability allows a local authenticated user to execute arbitrary code.
A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause a use-after-free in ext4_xattr_set_entry function and a denial of service or unspecified other impact may occur by renaming a file in a crafted ext4 filesystem image.
Remediation
Install update from vendor's website.
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-4.4.161
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.133
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.162