CVE-2026-72326

In the Linux kernel, the following vulnerability has been resolved: net/sched: cake: reject overhead values that underflow length CAKE accepts signed overhead values and stores them in an s16, but the adjusted packet length calculation uses unsigned arithmetic. A negative effective length can therefore wrap to a large value. Such configurations make rate accounting depend on integer wraparound rather than on the packet size userspace intended to model. A static netlink lower bound is not enough because packets reaching CAKE can be smaller than any reasonable manual-overhead allowance. Fold the signed overhead adjustment into the existing datapath MPU clamp so negative adjusted lengths are clamped before link-layer framing adjustments.

CVSS

No CVSS.

References

Link	Resource
https://git.kernel.org/stable/c/297f459865360b46a887667cbf3aac6a6f013841
https://git.kernel.org/stable/c/336c1e414fc0e9844d445174e8ada2a7dd8d1c4b
https://git.kernel.org/stable/c/7aa0e64fea778a9e3df73e64da95367ff8ad2ea5
https://git.kernel.org/stable/c/b7f97cae7ec1b6c3c32843c42be218690d310467
https://git.kernel.org/stable/c/bcdf3a3664f7d2c4e37e155f30f72ef33f041804
https://git.kernel.org/stable/c/e1df6cff03aad8c96e55a8b2a991e505c7a3ff6f
https://git.kernel.org/stable/c/f1e7807df5bf2d42a40266430e9f82f37633cdcf
https://git.kernel.org/stable/c/f511dd7bf6077aa7afbe72914520553fedaacbb4

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 06:22

Updated : 2026-08-17 06:18

NVD link : CVE-2026-72326

Mitre link : CVE-2026-72326

CVE.ORG link : CVE-2026-72326

JSON object : View

Products Affected

No product.

CWE

No CWE.

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