Red Hat Security Advisory 2019-3517-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service, heap overflow, information leakage, and use-after-free vulnerabilities.
03447a52c4980f374df664e7374cea8800a1174c9ab4df5eb1f470f7db1d6d0bRed Hat Security Advisory 2019-3309-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include denial of service, heap overflow, information leakage, null pointer, and use-after-free vulnerabilities.
59cc375374ff6c15113d1988a4247e3d24bd10d07e2610dd9344468468bbc9e6Ubuntu Security Notice 3901-2 - USN-3901-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. Various other issues were also addressed.
c25a324edcfdb0698186cf0255921ec343ba3bedda004de93b2622c9d0166073Ubuntu Security Notice 3901-1 - Jann Horn discovered that the userfaultd implementation in the Linux kernel did not properly restrict access to certain ioctls. A local attacker could use this possibly to modify files. It was discovered that the crypto subsystem of the Linux kernel leaked uninitialized memory to user space in some situations. A local attacker could use this to expose sensitive information. Various other issues were also addressed.
2733d1718525888590b59662b23b1cc1de9b8d11aba8290d25b543ffd636e966Ubuntu Security Notice 3878-2 - It was discovered that a race condition existed in the vsock address family implementation of the Linux kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could use this to expose sensitive information. Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux kernel, when handling interrupts in environments where nested virtualization is in use. A local attacker in a guest VM could possibly use this to gain administrative privileges in a host machine. Various other issues were also addressed.
836e2d26e3cb7e111d07f62c277179c810b8d3827600b341b6da1a764f655919Ubuntu Security Notice 3878-1 - It was discovered that a race condition existed in the vsock address family implementation of the Linux kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could use this to expose sensitive information. Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux kernel, when handling interrupts in environments where nested virtualization is in use. A local attacker in a guest VM could possibly use this to gain administrative privileges in a host machine. Various other issues were also addressed.
53443e7ab73989a11fa42178ed663148853ae0460bc906e43bd330b74c010761Ubuntu Security Notice 3872-1 - It was discovered that a race condition existed in the vsock address family implementation of the Linux kernel that could lead to a use-after-free condition. A local attacker in a guest virtual machine could use this to expose sensitive information. Cfir Cohen discovered that a use-after-free vulnerability existed in the KVM implementation of the Linux kernel, when handling interrupts in environments where nested virtualization is in use. A local attacker in a guest VM could possibly use this to gain administrative privileges in a host machine. Various other issues were also addressed.
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