CVE-2026-53154
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 A local attacker could possibly use this to write to memory after permission to do so had been revoked, bypassing memory protections or escalating privileges.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) It was discovered that some AMD Zen 2 processors did not properly isolate shared resources in the operation cache. A local attacker could possibly use this issue to corrupt instructions executed at a higher privilege level, resulting in privilege escalation. (CVE-2025-54518) 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: - x86 platform drivers; - ARM64 architecture; - Cryptographic API; - PSP security protocol; - User-space API (UAPI); - Kernel build system; - ARM32 architecture; - MIPS architecture; - PowerPC architecture; - RISC-V architecture; - S390 architecture; - User-Mode Linux (UML); - x86 architecture; - Block layer subsystem; - Compute Acceleration Framework; - Intel NPU Driver; - ACPI drivers; - Android drivers; - Auxiliary display drivers; - Drivers core; - DRBD Distributed Replicated Block Device drivers; - Rados block device (RBD) driver; - Ublk userspace block driver; - Compressed RAM block device driver; - Bluetooth drivers; - Bus devices; - Character device driver; - Hardware random number generator core; - Clock framework and drivers; - CPU frequency scaling framework; - Hardware crypto device drivers; - Buffer Sharing and Synchronization framework; - DPLL subsystem; - EDAC drivers; - Arm Firmware Framework for ARMv8-A(FFA); - EFI core; - Intel Stratix 10 firmware drivers; - FPGA Framework; - FWCTL subsystem; - GPIO subsystem; - GPU drivers; - HID subsystem; - Hardware monitoring drivers; - CoreSight HW tracing drivers; - I2C subsystem; - I3C su
CSIRTS triage
- What
- The vulnerability involves restoring reservation on error in hugetlb folio copy paths.
- Who is affected
- Deployments using hugetlb memory management.
- Urgency
- Remediation is medium urgency due to the medium severity rating.
- Action
- Apply the patch to address the error handling in hugetlb.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Advisory coverage (4)
- unknownexploitedUSN-8728-1: Linux kernel (GCP) vulnerabilitiesubuntu · 2026-09-07
- unknownexploitedUSN-8727-1: Linux kernel (OEM) vulnerabilitiesubuntu · 2026-09-07
- unknownexploitedUSN-8726-1: Linux kernel vulnerabilitiesubuntu · 2026-09-07
- mediumCVE-2026-53154: mm/hugetlb: restore reservation on error in hugetlb folio copy pathsmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53154)