PT-2026-38992 · Linux · Linux Kernel
CVE-2026-43341
·
Published
2026-05-08
·
Updated
2026-07-17
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A flaw exists in the
ioam6 fill trace data() function where the schema contribution to the trace length is stored in a u8 (an 8-bit unsigned integer). When bit 22 is enabled and the largest schema payload is used, the sclen variable wraps from 256 to 0, bypassing the remaining-space check. Consequently, the ioam6 fill trace data() function positions the write cursor without reserving the necessary schema area but still copies the 4-byte schema header and the full schema payload, leading to a trace buffer overrun.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linux Kernel