CVE-2026-43393

About vulnerability

In the Linux kernel, the following vulnerability has been resolved: btrfs: fix chunk map leak in btrfs_map_block() after btrfs_chunk_map_num_copies() Fix a chunk map leak in btrfs_map_block(): if we return early with -EINVAL, we’re not freeing the chunk map that we’ve just looked up. A flaw was found in the Linux kernel’s btrfs file system. This vulnerability, a memory leak, occurs in the btrfs_map_block() function. When an early error return (-EINVAL) happens, the allocated chunk map is not properly freed, leading to a resource leak. This can potentially lead to system instability or a Denial of Service (DoS) condition due to memory exhaustion.

Live-patch status from KernelCare for each operating system.