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Dell security advisory (AV26-863)

Dell issued firmware and AppSync security updates for PowerEdge Intel-processor servers (DSA-2026-356, DSA-2026-165); Cyber Centre urges administrators to apply them.

Dell advisories DSA-2026-356 and DSA-2026-165 cover vulnerabilities in Dell PowerEdge server firmware for Intel processors across multiple versions and models, and in Dell AppSync versions up to and including 4.6.0.4 and 4.6.1.0. Canada's Cyber Centre republished the notice (AV26-863) urging users and administrators to review the provided links and apply necessary updates. No exploitation or severity details were included in the bulletin.

Canadian Centre for Cyber Security · 16d agoAdvisory

AMD security advisory (AV26-879)

Canadian Centre for Cyber Security advisory AV26-879 lists vulnerabilities across AMD EPYC, Ryzen, Threadripper, Instinct, and embedded processors, urging updates.

The September 3, 2026 advisory states AMD is affected by processor vulnerabilities as of September 2, 2026, spanning 2nd-4th Gen EPYC, Ryzen 3000-7045 series, Athlon, Threadripper, Radeon PRO V620, Instinct MI300A, and embedded product lines. It specifies required microcode package versions for each affected family and encourages users and administrators to review AMD's links and apply updates as they become available.

Canadian Centre for Cyber Security · 13d agoAdvisory

USN-8726-1: Linux kernel vulnerabilities

Ubuntu issued kernel security update USN-8726-1 fixing an Arm TLB invalidation flaw (CVE-2025-10263) that enables local privilege escalation, plus other kernel fixes.

Ubuntu released USN-8726-1, a security update for the generic Linux kernel. It fixes CVE-2025-10263, where certain Arm processors complete broadcast TLB invalidation before related memory writes are globally observed, potentially letting local attackers bypass memory protections or escalate privileges. The update also addresses additional kernel flaws in ARM64, ARM32, RISC-V, S390 and other subsystems.

Ubuntu Security Noticesupdated · 9d agofirst · 9d agoAdvisory 6 sourcesCVE-2025-10263

Chipmaker Patch Tuesday: Nvidia, AMD, Arm Issue Security Advisories

AMD, Arm, and Nvidia issued Patch Tuesday advisories fixing a Linux GPU driver DoS flaw, nine Mali GPU vulnerabilities, and two high-severity Triton defects.

AMD fixed CVE-2026-43603, a NULL pointer dereference in its Linux GPU kernel driver that can crash systems and cause denial-of-service, credited to SecMate researchers, with patches for EPYC, Ryzen, Radeon, and Instinct shipped in July and embedded variants due in October. Arm published an advisory covering nine Mali GPU vulnerabilities allowing use-after-free access, kernel information leaks, or DoS, releasing fixes for Valhall and 5th Gen GPU Architecture drivers, with Bifrost also affected. Nvidia updated Triton Inference Server for Linux to resolve two high-severity flaws, one causing DoS and one enabling information disclosure, data tampering, and DoS. Intel had issued no new advisories since the previous Patch Tuesday.

SecurityWeek · 7d agoAdvisoryCVE-2026-43603