CVE-2026-43341

In the Linux kernel, the following vulnerability has been resolved:  net/ipv6: ioam6: prevent schema length wraparound in trace fill  ioam6filltracedata() stores the schema contribution to the trace length in a u8. With bit 22 enabled and the largest schema payload, sclen becomes 1 + 1020 / 4, wraps from 256 to 0, and bypasses the remaining-space check. ioam6filltracedata() then positions the write cursor without reserving the schema area but still copies the 4-byte schema header and the full schema payload, overrunning the trace buffer.  Keep sclen in an unsigned int so the remaining-space check and the write cursor calculation both see the full schema length.