Race condition in Linux kernel - CVE-2026-98050
Published: September 28, 2026
Vulnerability identifier: #VU152432
CSH Severity: Medium
CVSS v4: 7.7 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98050
CWE-ID: CWE-362
Exploitation vector: Adjecent network
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 a race condition in the mlxsw Spectrum PTP packet-finish ingress-delivery path when processing unmatched PTP entries concurrently with NAPI polling. A remote attacker can exploit the race condition to cause a denial of service.
Exploitation requires a transmit-timestamp timeout to produce an unmatched entry while the owning NAPI thread is polling on another CPU.
Affected software
Linux kernel
How to mitigate CVE-2026-98050
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3