CVE-2026-64413

In the Linux kernel, the following vulnerability has been resolved: netfilter: ebtables: zero chainstack array sashiko reports: looking at ebtables table translation, could a sparse cpu_possible_mask lead to an uninitialized pointer free? If cpu_possible_mask is sparse (for example, CPU 0 and CPU 2 are possible, but CPU 1 is not), the allocation loop skips CPU 1. If vmalloc_node() fails at CPU 2, the cleanup loop will blindly decrement and call vfree() on newinfo->chainstack[1]. Not a real-world bug, such allocation isn't expected to fail in the first place.

• linux linux kernel (>= 2.6.12.1 < 5.10.261) • linux linux kernel (>= 5.11 < 5.15.212) • linux linux kernel (>= 5.16 < 6.1.178) • linux linux kernel (>= 6.2 < 6.6.145) • linux linux kernel (>= 6.7 < 6.12.97) • linux linux kernel (>= 6.13 < 6.18.39) • linux linux kernel (>= 6.19 < 7.1.4) • linux linux kernel 2.6.12 • linux linux kernel 7.2