Race condition in Linux kernel - CVE-2026-90105
Published: September 19, 2026
Vulnerability identifier: #VU151376
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90105
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause partial reads of neighbor hardware addresses.
The vulnerability exists due to a race condition in the VXLAN arp_reduce and neigh_reduce functions when processing ARP or IPv6 neighbor-discovery traffic during a neighbor hardware-address update. A remote attacker can send network traffic to cause partial reads of neighbor hardware addresses.
Affected software
Linux kernel
How to mitigate CVE-2026-90105
Install security update from vendor's repository.