Vulnerability in Linux

CVE-2025-68255

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix stack buffer overflow in OnAssocReq IE parsing The Supported Rates IE length from an incoming Association Request frame was used directly as the memcpy() length when copying into a fixed-size 16-byte stack buffer (supportRate). A malicious station can advertise an IE length larger than 16 bytes, causing a stack buffer overflow. Clamp ie_len to the buffer size before copying the Supported Rates IE, and correct the bounds check when merging Extended Supported Rates to prevent a second potential overflow. This prevents kernel stack corruption triggered by malformed association requests.

EPSS: 0.002 (8.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Linux — versions 554c0a3abf216c991c5ebddcdb2c08689ecd290b, 4.12, 0

References

Frequently asked questions

What is CVE-2025-68255?
CVE-2025-68255 is a high-severity vulnerability in Linux. CVSS score: 8.8/10. Published 2025-12-16.
How severe is CVE-2025-68255?
High severity. CVSS v3 base score is 8.8 out of 10.