# CVE-2025-68724

## Summary

- **CVE ID:** CVE-2025-68724
- **Severity:** HIGH
- **CVSS Score:** 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
- **CWE:** N/A
- **Published:** Dec 24, 2025
- **Last Modified:** Sep 8, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:

crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id

Use check_add_overflow() to guard against potential integer overflows
when adding the binary blob lengths and the size of an asymmetric_key_id
structure and return ERR_PTR(-EOVERFLOW) accordingly. This prevents a
possible buffer overflow when copying data from potentially malicious
X.509 certificate fields that can be arbitrarily large, such as ASN.1
INTEGER serial numbers, issuer names, etc.

## Affected Products

- Linux — Linux (7901c1a8effbe5f89673bfc09d6e37b8f334f1a7)
- Linux — Linux (3.18)
- Linux — Linux (0)
- Linux — Linux (5.10.248)
- Linux — Linux (5.15.198)
- Linux — Linux (6.1.160)
- Linux — Linux (6.6.120)
- Linux — Linux (6.12.63)
- Linux — Linux (6.17.13)
- Linux — Linux (6.18.2)
- Linux — Linux (6.19)

## References

- [CNA](https://git.kernel.org/stable/c/60a7be5ee74408147e439164ac067e418ca74bb4)
- [CNA](https://git.kernel.org/stable/c/c13c6e9de91d7f1dd7df756b1fa5a1f968839d76)
- [CNA](https://git.kernel.org/stable/c/dfc1613961828745165aec6552c3818fa14ab725)
- [CNA](https://git.kernel.org/stable/c/5b8ac617c8dab5cad3c4dc8d84d0987808a0f99c)
- [CNA](https://git.kernel.org/stable/c/c73be4f51eed98fa0c7c189db8f279e1c86bfbf7)
- [CNA](https://git.kernel.org/stable/c/6af753ac5205115e6c310c8c4236c01b59a1c44f)
- [CNA](https://git.kernel.org/stable/c/b7090a5c153105b9fd221a5a81459ee8cd5babd6)
- [CNA](https://git.kernel.org/stable/c/df0845cf447ae1556c3440b8b155de0926cbaa56)
- [siemens-SADP](https://cert-portal.siemens.com/productcert/html/ssa-019113.html)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.14%
- **EPSS Percentile:** 3.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._