CVE-2025-68726

Linux Kernel 6.16-6.17.12, 6.18.0-6.18.1 - Memory Corruption via AEAD Reqsize Handling

Title source: llm
STIX 2.1

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: aead - Fix reqsize handling Commit afddce13ce81d ("crypto: api - Add reqsize to crypto_alg") introduced cra_reqsize field in crypto_alg struct to replace type specific reqsize fields. It looks like this was introduced specifically for ahash and acomp from the commit description as subsequent commits add necessary changes in these alg frameworks. However, this is being recommended for use in all crypto algs instead of setting reqsize using crypto_*_set_reqsize(). Using cra_reqsize in aead algorithms, hence, causes memory corruptions and crashes as the underlying functions in the algorithm framework have not been updated to set the reqsize properly from cra_reqsize. [1] Add proper set_reqsize calls in the aead init function to properly initialize reqsize for these algorithms in the framework. [1]: https://gist.github.com/Pratham-T/24247446f1faf4b7843e4014d5089f6b

Scores

EPSS 0.0002
EPSS Percentile 6.7%

Details

Status published
Products (10)
linux/Kernel 6.16.0 - 6.17.13linux
linux/Kernel 6.18.0 - 6.18.2linux
Linux/Linux < 6.16
Linux/Linux 6.16
Linux/Linux 6.17.13 - 6.17.*
Linux/Linux 6.18.2 - 6.18.*
Linux/Linux 6.19
Linux/Linux afddce13ce81d52a13898fa0700917835c71acd6 - 12b413f5460c393d1151a37f591140693eca0f84
Linux/Linux afddce13ce81d52a13898fa0700917835c71acd6 - 64377e66e187164bd6737112d07257f5f0feb681
Linux/Linux afddce13ce81d52a13898fa0700917835c71acd6 - 9b04d8f00569573796dd05397f5779135593eb24
Published Dec 24, 2025
Tracked Since Feb 18, 2026