CVE-2019-19056
kernel: A memory leak in the mwifiex_pcie_alloc_cmdrsp_buf() function in drivers/net/wireless/marvell/mwifiex/pcie.c allows to cause DoS
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 5, 2019
Updated · June 28, 2026
Description
A flaw was found in the way the mwifiex PCIE driver in the Linux kernel handled resource cleanup on a DMA mapping error. This flaw allows an attacker able to trigger the DMA mapping error to crash the system.
Statement
This issue is rated as having Low impact because of the preconditions needed to trigger the resource cleanup code path (DMA mapping error).
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
In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module mwifiex_pcie. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-400 · Uncontrolled Resource Consumption