CVE-2026-45971

In the Linux kernel, the following vulnerability has been resolved: bpf: Limit bpf program signature size Practical BPF signatures are significantly smaller than KMALLOC_MAX_CACHE_SIZE Allowing larger sizes opens the door for abuse by passing excessive size values and forcing the kernel into expensive allocation paths (via kmalloc_large or vmalloc).

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - 416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-05-27

Last modified

2026-05-27

Affected products

• Linux Kernel (Linux)

References

• https://git.kernel.org/stable/c/5835a077c6f5c565d525eaca9fac01572b97a9b9
• https://git.kernel.org/stable/c/ea1535e28bb3773fc0b3cbd1f3842b808016990c
• https://git.kernel.org/stable/c/eb8166c79097996396468a341de258a798789d36