Ubuntu Security Notice 5343-1 - Yiqi Sun and Kevin Wang discovered that the cgroups implementation in the Linux kernel did not properly restrict access to the cgroups v1 release_agent feature. A local attacker could use this to gain administrative privileges. It was discovered that the aufs file system in the Linux kernel did not properly restrict mount namespaces, when mounted with the non-default allow_userns option set. A local attacker could use this to gain administrative privileges.
f52b839ff13c30e863d5be66f515f639c4bbf6c3ac1911f54911c3a1db6abad1Ubuntu Security Notice 5299-1 - Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation could reassemble mixed encrypted and plaintext fragments. A physically proximate attacker could possibly use this issue to inject packets or exfiltrate selected fragments. It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access control. An authenticated attacker could possibly use this to expose sensitive information.
d8a0dffe787d4a58d1bd2849d246c1906fbde64a802ac79bc4262f763d9501efRed Hat Security Advisory 2021-2736-01 - 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. 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 a use-after-free vulnerability.
1fa632f28d5e605ea0ec82cfb7ecd3c710ed64a96ecae4e68f689247c4013aa9Red Hat Security Advisory 2021-2737-01 - The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. 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 a use-after-free vulnerability.
2e5b80333758444ee18869e9bb1536cdf3c1792d73a5b2e1de77d5239e912e20Red Hat Security Advisory 2021-2725-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include double free and use-after-free vulnerabilities.
839801d043758f7e24d6866c3d962cab1678aa56dbae96ccf9380109e7674816Red Hat Security Advisory 2021-2726-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a use-after-free vulnerability.
d6efc4fe2546e1493ba8e36a97c8fe29405d425bb301d46e0f650cdaf1e8942eRed Hat Security Advisory 2021-2728-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.
d43770786054aac5b8cc61fbf199a0182de62f1b498cb7938b8816c513a0b04cRed Hat Security Advisory 2021-2729-01 - 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. Issues addressed include a use-after-free vulnerability.
bf7f86cf504a3fe0a68f264a3fc9d99b6cde2e998fa085b4a75c1857e5653d62Red Hat Security Advisory 2021-2720-01 - 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. Issues addressed include a use-after-free vulnerability.
4ed594fb576d3f8b864ea7e28b5b4e3fa88ef75b4717b44ff007afb33ec36a7bRed Hat Security Advisory 2021-2731-01 - 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. Issues addressed include a use-after-free vulnerability.
d6336d25ec6673afb2d64d9fbea17418ad1a3ad59cbaffd57c3a662c1bd5cf0cUbuntu Security Notice 5018-1 - It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service or execute arbitrary code. Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits for pointer operations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
4c1acb01997501488d94e4f295f9a8b096b13216c5f32c0bc98642127cd2ea8aUbuntu Security Notice 5016-1 - It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service or execute arbitrary code. Or Cohen and Nadav Markus discovered a use-after-free vulnerability in the nfc implementation in the Linux kernel. A privileged local attacker could use this issue to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
df70a721f7fb5de200a155149e97844791763fb3ad0f300b9d557dfe0afc8fd2Red Hat Security Advisory 2021-2727-01 - 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. Issues addressed include a use-after-free vulnerability.
0044402a8af57531c5c661603d2f4345f464d35ba72ffc0fa6257a02e425c795Red Hat Security Advisory 2021-2718-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass and use-after-free vulnerabilities.
b5d2a86d6368571ef0d34128c40be52cab5354d30a4e4bbfcba727bd7eef99d6Red Hat Security Advisory 2021-2719-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass and use-after-free vulnerabilities.
e26fe41b898fa5fb54eb09bbc4300aeb69f3300632f9ea6b618e57cc39619d3aRed Hat Security Advisory 2021-2730-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.
07b4ce1a7f36788e6e18670bf06262ba67435c493f6f7f38252b8546a9833bdfRed Hat Security Advisory 2021-2732-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.
0ae2089bc9085202733263eabe1826d5a267dff310b38d9b7973e70e4d251579Red Hat Security Advisory 2021-2733-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.
ca38ab42ac4f33858c1d5edee5152754975974c2c92cbb706d97793270597de5Red Hat Security Advisory 2021-2734-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.
99f079adc186c2d82d3b579e84be343741eb238b4be2a07e3522085c19e36304Red Hat Security Advisory 2021-2666-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass and use-after-free vulnerabilities.
c70a4fe4e3f4235bf63da6772498e20828139a2c190f8e31d433b493945f95acRed Hat Security Advisory 2021-2668-01 - 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. Issues addressed include a use-after-free vulnerability.
ef6922d78fe37ca685b8cae5cf75ac29b614e18c9acbcdc958a5470d5277b45aRed Hat Security Advisory 2021-2570-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include bypass and use-after-free vulnerabilities.
2a9c9ce4187f2b3e7df00dc74f8d3ba0576a5cfba1ef7bf4326052e15d55d681Red Hat Security Advisory 2021-2599-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include bypass and use-after-free vulnerabilities.
328c5c026f32edfec51846f77f77425f5561fa6a3f2f3bb7afb29408f48a610cRed Hat Security Advisory 2021-2563-01 - 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. Issues addressed include a use-after-free vulnerability.
29f95c53b6bede9ea1a91fa03ac102e733d991d467b629c0d7576f6b5debe95aUbuntu Security Notice 4997-2 - USN-4997-1 fixed vulnerabilities in the Linux kernel for Ubuntu 21.04. This update provides the corresponding updates for the Linux KVM kernel for Ubuntu 21.04. Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. Various other issues were also addressed.
16f2c8cca9066cef3cbb8b6417110467cabb0932233c1b98fecf1f6a500fac6b
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