Ubuntu Security Notice 5218-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that the eBPF implementation in the Linux kernel did not properly validate the memory size of certain ring buffer operation arguments. A local attacker could use this to cause a denial of service or possibly execute arbitrary code.
f90f83bbcd246c8d673aa082579a0c09cd5de90a6bc0cee2d59e2eed594b9e9aUbuntu Security Notice 5208-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service.
ea7e5bc5b3961bfb7b88bcc657765481b669c52e08a5c1ef062c1477afed2dbaUbuntu Security Notice 5207-1 - Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. It was discovered that the eBPF implementation in the Linux kernel contained a race condition around read-only maps. A privileged attacker could use this to modify read-only maps.
63504dd3c2b3abff85b5c8960e3f39b8f7a1ce6773225176a4d31ae19837a516Ubuntu Security Notice 5165-1 - It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface implementation. A local attacker could possibly use this to cause a denial of service or execute arbitrary code. It was discovered that the SCTP protocol implementation in the Linux kernel did not properly verify VTAGs in some situations. A remote attacker could possibly use this to cause a denial of service. Various other issues were also addressed.
a0b01b9f4766a141e1c20c5d99e1ca222d00d4498a726851cff5f6c91eb4780cRed Hat Security Advisory 2021-4750-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host, ovirt-node, and rhev-hypervisor. Red Hat Virtualization Hosts are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Issues addressed include buffer overflow, null pointer, and out of bounds write vulnerabilities.
cbda0867ab057ae629575d73a4ec33e70fb6918fb0738677007e87c3514f5546Red Hat Security Advisory 2021-4644-02 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
a2970e1cbe002a6af05a0119e6f1704df3cd26239426b307b160810ce0b8fce9Red Hat Security Advisory 2021-4646-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
05def5d681747b437fdd2a5c3e4955aac707baf60b3048864ae74bf842a890d7Red Hat Security Advisory 2021-4647-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system.
c9088bb36ca27ce4ecf566d11cc5445a00a904ba22e4d1f3c4a0d4c5b3a546ecRed Hat Security Advisory 2021-4645-01 - This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel.
4c589c17cda6e0e06099b597c4406e3f84ca4d9520037c648f16059fdfc2ab2aRed Hat Security Advisory 2021-4650-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system.
30db52979e8346ae4a03a9bc7a7634ce9e814982f05e67050bd6541094c56531Red Hat Security Advisory 2021-4648-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
efed1a8f4077bc4612ff4f66517074e78af2aa949ac9c1d0694d41fcc4c884e4
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