Vulnerability Description
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).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.18, < 6.18.14 |
References
- https://git.kernel.org/stable/c/5835a077c6f5c565d525eaca9fac01572b97a9b9Patch
- https://git.kernel.org/stable/c/ea1535e28bb3773fc0b3cbd1f3842b808016990cPatch
- https://git.kernel.org/stable/c/eb8166c79097996396468a341de258a798789d36Patch
FAQ
What is CVE-2026-45971?
CVE-2026-45971 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 lar...
How severe is CVE-2026-45971?
CVE-2026-45971 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45971?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.