CVE-2026-43341

In the Linux kernel, the following vulnerability has been resolved: net/ipv6: ioam6: prevent schema length wraparound in trace fill ioam6_fill_trace_data() 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. __ioam6_fill_trace_data() 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.

Affected products

Linuxmint, Linux Kernel

Linux Linux Kernel

< 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0

CVSS 3.1

9.8 CRITICAL

EPSS

0.4% (34th percentile)

NVD status

Modified

Published

2026-05-08

No exploit for CVE-2026-43341 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.