Memory corruption in Linux kernel - CVE-2026-90059
Published: September 19, 2026
Vulnerability identifier: #VU151426
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90059
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper packet-header alignment in the stmmac RX path when processing received network packets. A remote attacker can send an ICMP echo request to cause a denial of service.
The issue affects ARM32 systems where NET_IP_ALIGN is 2.
Affected software
Linux kernel
How to mitigate CVE-2026-90059
Install security update from vendor's repository.