USN-7506-1: Linux kernel vulnerabilities

USN-7506-1: Linux kernel vulnerabilities

https://ubuntu.com/security/notices/rss.xml / Mon, 05/12/2025 - 17:39
Demi Marie Obenour and Simon Gaiser discovered that several Xen para- virtualization device frontends did not properly restrict the access rights of device backends. An attacker could possibly use a malicious Xen backend to gain access to memory pages of a guest VM or cause a denial of service in the guest. (CVE-2022-23041) Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - Hardware crypto device drivers; - GPU drivers; - IIO subsystem; - Media drivers; - Network drivers; - SCSI subsystem; - SPI subsystem; - USB Gadget drivers; - Ceph distributed file system; - File systems infrastructure; - JFS file system; - Network file system (NFS) client; - Network file system (NFS) server daemon; - NILFS2 file system; - SMB network file system; - CAN network layer; - IPv6 networking; - MAC80211 subsystem; - Netfilter; - Netlink; - Network traffic control; - SCTP protocol; - TIPC protocol; (CVE-2024-46780, CVE-2021-47163, CVE-2024-46771, CVE-2021-47506, CVE-2024-36934, CVE-2024-35864, CVE-2024-26915, CVE-2021-47150, CVE-2024-50256, CVE-2024-53173, CVE-2024-53066, CVE-2024-53063, CVE-2021-47245, CVE-2024-26996, CVE-2024-56642, CVE-2021-47219, CVE-2024-56631, CVE-2021-47587, CVE-2021-47191, CVE-2023-52741, CVE-2021-46959, CVE-2024-26689, CVE-2024-26974, CVE-2024-56770, CVE-2024-56598, CVE-2024-49944, CVE-2024-50237, CVE-2024-53140, CVE-2024-56650, CVE-2021-47500, CVE-2025-21971)

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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.