USN-8781-1: Linux kernel (NVIDIA Tegra) vulnerabilities
Ubuntu USN-8781-1 patches Linux kernel NVIDIA Tegra flaws including CVE-2025-10263, an Arm TLB race enabling local privilege escalation.
USN-8781-1 fixes Linux kernel vulnerabilities in Ubuntu builds for NVIDIA Tegra, including CVE-2025-10263, where some Arm processors complete broadcast TLB invalidation before related memory writes are globally observed. A local attacker could exploit this to write to memory after permissions were revoked, bypassing memory protections or escalating privileges. The update also corrects flaws across ARM64, ARM32, PowerPC, RISC-V, UAPI, and kernel build subsystems.
- CVE-2025-10263: Arm TLB invalidation race enables local privilege escalation
- Affects Ubuntu Linux kernel builds for NVIDIA Tegra devices
- Update also fixes flaws in multiple kernel subsystems
- CVEs
- CVE-2025-10263
- Products
- UbuntuLinux kernel
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-10263 | Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 &… | 9.1 | <1% |
From the original article
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 A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges.
ubuntu.com
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