Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-05-08T00:00:00 kernel: net/ipv6: ioam6: prevent schema length wraparound in trace fill 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-190

A flaw was found in the Linux kernel's IPv6 In-situ Operations, Administration, and Maintenance (IOAM6) trace fill functionality. An integer overflow vulnerability exists in the `ioam6_fill_trace_data()` function, where the schema length calculation can wrap around due to being stored in an 8-bit unsigned integer. This bypasses buffer size checks, leading to a buffer overflow that can result in a denial of service or other memory corruption issues.

Red Hat Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43341 https://nvd.nist.gov/vuln/detail/CVE-2026-43341 https://lore.kernel.org/linux-cve-announce/2026050824-CVE-2026-43341-7c3e@gregkh/T