USN-4116-1

Dashboard / Vulnerabilities / USN-4116-1

USN-4116-1

Summary: linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities

Details: It was discovered that a use-after-free error existed in the block layer subsystem of the Linux kernel when certain failure conditions occurred. A local attacker could possibly use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-20856) Amit Klein and Benny Pinkas discovered that the Linux kernel did not sufficiently randomize IP ID values generated for connectionless networking protocols. A remote attacker could use this to track particular Linux devices. (CVE-2019-10638) Praveen Pandey discovered that the Linux kernel did not properly validate sent signals in some situations on PowerPC systems with transactional memory disabled. A local attacker could use this to cause a denial of service. (CVE-2019-13648) It was discovered that the floppy driver in the Linux kernel did not properly validate meta data, leading to a buffer overread. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-14283) It was discovered that the floppy driver in the Linux kernel did not properly validate ioctl() calls, leading to a division-by-zero. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-14284) Jason Wang discovered that an infinite loop vulnerability existed in the virtio net driver in the Linux kernel. A local attacker in a guest VM could possibly use this to cause a denial of service in the host system. (CVE-2019-3900)

References: https://ubuntu.com/security/notices/USN-4116-1, https://ubuntu.com/security/CVE-2018-20856, https://ubuntu.com/security/CVE-2019-3900, https://ubuntu.com/security/CVE-2019-10638, https://ubuntu.com/security/CVE-2019-13648, https://ubuntu.com/security/CVE-2019-14283, https://ubuntu.com/security/CVE-2019-14284