Vulnerability in Linux
CVE-2025-68726
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
EPSS: 0.002 (5.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux — versions afddce13ce81d52a13898fa0700917835c71acd6, 6.16, 0
References
Frequently asked questions
- What is CVE-2025-68726?
- CVE-2025-68726 is a critical-severity vulnerability in Linux. CVSS score: 9.8/10. Published 2025-12-24.
- How severe is CVE-2025-68726?
- Critical severity. CVSS v3 base score is 9.8 out of 10.