SB2016071239 - Fedora 23 update for kernel
Published: July 12, 2016 Updated: April 24, 2025
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Race condition (CVE-ID: CVE-2016-6130)
The vulnerability allows a local authenticated user to gain access to sensitive information.
Race condition in the sclp_ctl_ioctl_sccb function in drivers/s390/char/sclp_ctl.c in the Linux kernel before 4.6 allows local users to obtain sensitive information from kernel memory by changing a certain length value, aka a "double fetch" vulnerability.
2) Out-of-bounds read (CVE-ID: CVE-2016-6156)
The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the ec_device_ioctl_xcmd() function in drivers/platform/chrome/cros_ec_dev.c. A local non-authenticated attacker can perform a denial of service (DoS) attack.
3) Man-in-the-middle attack (CVE-ID: CVE-2016-5696)
The vulnerability allows a remote attacker to write arbitrary files and cause DoS condition on the target system.
The weakness exists due to an error in net/ipv4/tcp_input.c while determining the rate of challenge ACK segments. A remote attacker can perform man-in-the-middle attack and hijack TCP sessions via a blind in-window attack.
Remediation
Install update from vendor's website.