Use-after-free in Linux kernel - CVE-2026-97603
Published: September 28, 2026
Vulnerability identifier: #VU152605
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-97603
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a use-after-free in Tx/Rx DIM work embedded in idpf_q_vector objects when NAPI polling queues DIM work after q_vectors are freed. A local user can repeatedly cycle the network interface under load to cause a denial of service.
Dynamic interrupt moderation is enabled by default, and no configuration is required.
Affected software
Linux kernel
How to mitigate CVE-2026-97603
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3