USN-8849-1: Linux kernel (NVIDIA Tegra) vulnerabilities
It was discovered that some Arm processors could complete a broadcast translation lookaside buffer (TLB) invalidation before memory writes made through the invalidated translation were globally observed. A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges. (CVE-2025-10263)
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: - ARM64 architecture; - InfiniBand drivers; - Network drivers; - TCM subsystem; - exFAT file system; - Network file system (NFS) server daemon; - B.A.T.M.A.N. meshing protocol; - IPv4 networking; - IPv6 networking; - Netfilter; - RDS protocol; (CVE-2026-53186, CVE-2026-53221, CVE-2026-53354, CVE-2026-53355, CVE-2026-53398, CVE-2026-63808, CVE-2026-63887, CVE-2026-63888, CVE-2026-63912, CVE-2026-63922, CVE-2026-63924, CVE-2026-63984, CVE-2026-63992, CVE-2026-63993, CVE-2026-63994, CVE-2026-64007, CVE-2026-64091)
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
ubuntu/linux-image-5.15.0-1068-nvidia-tegrato a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-5.15.0-1068-nvidia-tegra-rtto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-nvidia-tegrato a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-nvidia-tegra-5.15to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-nvidia-tegra-rtto a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-image-nvidia-tegra-rt-5.15to a version that resolves this vulnerability.Fixed in Ubuntu Pro - Upgrade
Upgrade
ubuntu/linux-nvidia-tegra-5.15to a version that resolves this vulnerability.Fixed in 5.15.0-1068.70~20.04.1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Patch USN-8849-1
Event History
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-64091
- CVE-2026-64007
- CVE-2026-63994
- CVE-2026-63993
- CVE-2026-63992
- CVE-2026-63984
- CVE-2026-63924
- CVE-2026-63922
- CVE-2026-63912
- CVE-2026-63888
- CVE-2025-10263
- CVE-2026-53186
- CVE-2026-53221
- CVE-2026-53354
- CVE-2026-53355
- CVE-2026-53398
- CVE-2026-63808
- CVE-2026-63887
- UBUNTU-CVE-2025-10263
- UBUNTU-CVE-2026-53186
- UBUNTU-CVE-2026-53221
- UBUNTU-CVE-2026-53354
- UBUNTU-CVE-2026-53355
- UBUNTU-CVE-2026-53398
- UBUNTU-CVE-2026-63808
- UBUNTU-CVE-2026-63887
- UBUNTU-CVE-2026-63888
- UBUNTU-CVE-2026-63912
- UBUNTU-CVE-2026-63922
- UBUNTU-CVE-2026-63924
- UBUNTU-CVE-2026-63984
- UBUNTU-CVE-2026-63992
- UBUNTU-CVE-2026-63993
- UBUNTU-CVE-2026-63994
- UBUNTU-CVE-2026-64007
- UBUNTU-CVE-2026-64091
Frequently Asked Questions
Which CVEs are included in this advisory?
The advisory references CVE-2026-64091, CVE-2026-64007, and CVE-2026-63994.