Ubuntu Security Notice 5092-3 - USN-5092-2 fixed vulnerabilities in Linux 5.11-based kernels. Unfortunately, for Linux kernels intended for use within Microsoft Azure environments, that update introduced a regression that could cause the kernel to fail to boot in large Azure instance types. This update fixes the problem. Various other issues were also addressed.
2f8462834b9c412b2c94caea0415569d6a8d0a25ce4c553b1643bb9766389a30Ubuntu Security Notice 5106-1 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. Various other issues were also addressed.
e6f1f8e07840dd321cac128c3e684c8a455cc504df4df29a372d0a536fd65241Ubuntu Security Notice 5096-1 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. Various other issues were also addressed.
98f615f379d8346abea7dc65ffd543f999a46dbda2ec8a72bcaac4dbaea40126Ubuntu Security Notice 5092-2 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. Various other issues were also addressed.
fe6e6f7b890fe9c454e6d8b6981a93e9900e3e12cc8de38080233a23b6f9f395Ubuntu Security Notice 5092-1 - Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. Various other issues were also addressed.
ebcf129926760acf6a8d3e98fe23c9b1ac0c8a4d82db537ed58774cee102bccf
© 2024 Packet Storm. All rights reserved.
%7Cutmcsr%3D(direct)%7Cutmcmd%3D(none)){kind=small}
Follow us on Twitter
Follow us on Facebook
Subscribe to an RSS Feed