CVE-2026-97502
kernel: mmc: davinci: avoid NULL deref of host->data in IRQ handler
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 DaVinci MultiMediaCard (MMC) driver. When processing hardware interrupt events such as read timeouts or communication errors, the driver accesses a data pointer without verifying that an active transfer structure exists. A local user or abnormal device condition can trigger these error states, causing a NULL pointer dereference that crashes the system and leads to a 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-476 · NULL Pointer Dereference