SB2019090231 - Ubuntu update for linux, linux-azure, linux-gcp and more
Published: September 2, 2019 Updated: October 31, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2019-10638)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the software uses the IP ID values that the kernel produces for connectionless protocols. A remote attacker with a crafted web page can forge the targeted system to send UDP traffic to an attacker-controlled IP address to gain unauthorized access to sensitive information on the system.
2) Resource management error (CVE-ID: CVE-2019-13648)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: 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]
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the "arch/powerpc/kernel/signal_32.c" and "arch/powerpc/kernel/signal_64.c" files on the PowerPC platform, when hardware transactional memory is disabled. A local authenticated attacker can make a "sigreturn()" system call that sends a signal frame that sends a signal frame that submits malicious input to the targeted system and cause a denial of service condition.
3) Integer overflow (CVE-ID: CVE-2019-14283)
CWE-ID: CWE-190 - Integer overflow
CVSSv4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local attacker to execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.
The vulnerability exists due to the "set_geometry" function in the "drivers/block/floppy.c" file does not properly validate the sect and head fields. A local authenticated attacker can insert a floppy disk that submits malicious input to the targeted system, trigger integer overflow, which could cause an out-of-bounds write condition and execute arbitrary code on the target system or cause a DoS condition.
4) Resource exhaustion (CVE-ID: CVE-2019-14284)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 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]
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a divide-by-zero condition in the "drivers/block/floppy.c" file. A local authenticated attacker can insert a floppy disk that submits malicious input to the targeted system, trigger resource exhaustion and perform a denial of service (DoS) attack.
5) Infinite loop (CVE-ID: CVE-2019-3900)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: 5.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop in vhost_net kernel module when processing incoming packets in handle_rx(). A remote attacker with access to guest operating system can stall the vhost_net kernel thread and cause denial of service conditions.
Remediation
Install update from vendor's website.