CVE-2026-98791
kernel: net/mlx5e: Fix AF_XDP TX timestamp teardown NULL dereference
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 24, 2026
Description
A flaw was found in the Linux kernel's Mellanox network driver (mlx5e). A local user can exploit this vulnerability to cause a denial of service (DoS) through a system crash. During the teardown of an AF_XDP (eXpress Data Path) transmit queue, outstanding descriptors requesting a transmit timestamp are completed without a completion queue entry, resulting in a NULL pointer dereference.
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 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference