USN-4527-1

Dashboard / Vulnerabilities / USN-4527-1

USN-4527-1

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

Details: It was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19054) It was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19073, CVE-2019-19074) Yue Haibing discovered that the Linux kernel did not properly handle reference counting in sysfs for network devices in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2019-20811) It was discovered that the F2FS file system in the Linux kernel did not properly perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-9445) It was discovered that the F2FS file system in the Linux kernel did not properly validate xattr meta data in some situations, leading to an out-of- bounds read. An attacker could use this to construct a malicious F2FS image that, when mounted, could expose sensitive information (kernel memory). (CVE-2019-9453) It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067) It was discovered that the NFS client implementation in the Linux kernel did not properly perform bounds checking before copying security labels in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25212)

References: https://ubuntu.com/security/notices/USN-4527-1, https://ubuntu.com/security/CVE-2019-9445, https://ubuntu.com/security/CVE-2019-9453, https://ubuntu.com/security/CVE-2019-19054, https://ubuntu.com/security/CVE-2019-19073, https://ubuntu.com/security/CVE-2019-19074, https://ubuntu.com/security/CVE-2019-20811, https://ubuntu.com/security/CVE-2020-0067, https://ubuntu.com/security/CVE-2020-25212