Red Hat Security Advisory 2020-2854-01 - The kernel-alt packages provide the Linux kernel version 4.x. Issues addressed include denial of service, memory leak, out of bounds write, privilege escalation, and use-after-free vulnerabilities.
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Ubuntu Security Notice 4318-1 - Al Viro discovered that the vfs layer in the Linux kernel contained a use- after-free vulnerability. A local attacker could use this to cause a denial of service or possibly expose sensitive information. Gustavo Romero and Paul Mackerras discovered that the KVM implementation in the Linux kernel for PowerPC processors did not properly keep guest state separate from host state. A local attacker in a KVM guest could use this to cause a denial of service. Various other issues were also addressed.
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