Ubuntu Security Notice 4907-1 - Wen Xu discovered that the xfs file system implementation in the Linux kernel did not properly validate the number of extents in an inode. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service. It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
e6f271c53250cd85b58ae0a960ce36cdd2bc77de858312b8626819778dc8771aRed Hat Security Advisory 2021-1168-01 - Red Hat Advanced Cluster Management for Kubernetes 2.2.2 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console-with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and security issues. Issues addressed include code execution, denial of service, integer overflow, and null pointer vulnerabilities.
cfc0ee4720a885efcdbb629dc90451c511ea3b56ea59530b3ab8554fa0475c01Red Hat Security Advisory 2021-1093-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, out of bounds read, and use-after-free vulnerabilities.
059ac98f927be53cb34bfbcaf019e55b9c1f39acbc7086390533a8aeb6488dfaRed Hat Security Advisory 2021-1081-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, out of bounds read, and use-after-free vulnerabilities.
aef5b23a4fe73958169e2989069fbdd8e0bd4e5e24e1ccfe2f32980af659f93eUbuntu Security Notice 4884-1 - Loris Reiff discovered that the BPF implementation in the Linux kernel did not properly validate attributes in the getsockopt BPF hook. A local attacker could possibly use this to cause a denial of service. It was discovered that the priority inheritance futex implementation in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.
6489a0321e388e395c9abf2af0d1e25ed8126a432c304b1773a5b533cb22c005Ubuntu Security Notice 4878-1 - It was discovered that the Marvell WiFi-Ex device driver in the Linux kernel did not properly validate ad-hoc SSIDs. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Ryota Shiga discovered that the sockopt BPF hooks in the Linux kernel could allow a user space program to probe for valid kernel addresses. A local attacker could use this to ease exploitation of another kernel vulnerability. Various other issues were also addressed.
df5ccf6b30eb1254c2f01c301d72cd7482fb7ffb88f401f19a6a70416eccfa20Debian Linux Security Advisory 4843-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.
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