NULL pointer dereference in Linux kernel - CVE-2026-64575
Published: August 6, 2026
Vulnerability identifier: #VU141033
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-64575
CWE-ID: CWE-476
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 null pointer dereference in bpf_iter_tcp_batch() and bpf_iter_tcp_seq_stop() when handling a batch reallocation failure during BPF TCP iterator processing. A local user can trigger a failed read path to dereference a cookie as a struct sock to cause a denial of service.
The issue can lead to a kernel panic.
Affected software
Linux kernel
How to mitigate CVE-2026-64575
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3