EUVD-2026-71506

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix event length with forced 8-byte alignment When RBFORCE8BYTEALIGNMENT is true, rbcalculateeventlength reserves the space of event-array0 for placing the data length and rbupdateevent stores the data length in...

CVE-2026-80876 ring-buffer: Fix event length with forced 8-byte alignment

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix event length with forced 8-byte alignment When RBFORCE8BYTEALIGNMENT is true, rbcalculateeventlength reserves the space of event-array0 for placing the data length and rbupdateevent stores the data length in...

CVE-2026-80876

In the Linux kernel, the following vulnerability has been resolved: ring-buffer: Fix event length with forced 8-byte alignment When RBFORCE8BYTEALIGNMENT is true, rbcalculateeventlength reserves the space of event-array0 for placing the data length and rbupdateevent stores the data length in...

CVE-2026-80876

CVE-2026-80876 affects the Linux kernel ring-buffer subsystem on architectures where RB_FORCE_8BYTE_ALIGNMENT is true (observed on riscv64 with CONFIG_HAVE_64BIT_ALIGNED_ACCESS=y). The root cause is a mismatch in length calculation: rb_calculate_event_length() unconditionally reserves sizeof(even...

How to understand stack and heap overflow exploits-a vulnerability warning-the black bar safety net

This article is a detailed description of the heap,and will teach you how to write a heap-based overflow vulnerability. Run the following program: include include include int mainint argc, char argv char buf1 = malloc1 2 8; char buf2 = malloc2 5 6; read's filenostdin, buf1, 2 0 0; freebuf2;...