CVE-2026-97515
kernel: i3c: master: svc: Prevent IRQ storm from false SLVSTART on NPCM845
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 24, 2026
Updated · September 29, 2026
Description
A flaw was found in the Linux kernel's I3C (Improved Inter-Integrated Circuit) master driver. On affected hardware, when a target device on the bus holds the data line low, the controller triggers an interrupt feedback loop during recovery attempts. This issue creates an interrupt storm that can overwhelm the processor, resulting in a system lockup and Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')