CVE-2026-80741 drm/log: Fix out-of-bounds read on empty message length

In the Linux kernel, the following vulnerability has been resolved: drm/log: Fix out-of-bounds read on empty message length drmlogdrawkmsgrecord accesses slen - 1 to strip the trailing newline, but len is unsigned int. If len is 0, the subtraction wraps to UINTMAX, causing an out-of-bounds read...