CVE-2026-43445
kernel: e1000/e1000e: Fix leak in DMA error cleanup
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 8, 2026
Updated · July 3, 2026
Description
A flaw was found in the Linux kernel's e1000 and e1000e network drivers. When an error occurs during the mapping of transmit (TX) buffers, an off-by-one error in the Direct Memory Access (DMA) cleanup process can lead to a memory leak. This issue results in the gradual exhaustion of system resources, which could eventually cause a Denial of Service (DoS) condition, making the system unresponsive.
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-772 · Missing Release of Resource after Effective Lifetime