CVE-2026-99035
kernel: mmc: mtk-sd: Cancel request timeout work on remove
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 23, 2026
Updated · October 29, 2026
Description
A flaw was found in the MediaTek SD/MMC host controller driver within the Linux kernel. When the driver is removed or unbound, it fails to wait for active request timeout tasks to complete before releasing host memory resources. A local user could exploit this timing issue during device removal to trigger a use-after-free condition, leading to a denial of service (DoS) or kernel memory corruption.
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 · 4.1CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-825 · Expired Pointer Dereference