What’s Vulnerable › Vulnerabilities

CVE-2025-68254: staging: rtl8723bs: fix out-of-bounds read in OnBeacon ESR IE parsing

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-12-16 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix out-of-bounds read in OnBeacon ESR IE parsing The Extended Supported Rates (ESR) IE handling in OnBeacon accessed *(p + 1 + ielen) and *(p + 2 + ielen) without verifying that these offsets lie within the received frame buffer. A malformed beacon with an ESR IE positioned at the end of the buffer could cause an out-of-bounds read, potentially triggering a kernel panic. Add a boundary check to ensure that the ESR IE body and the subsequent bytes are within the limits of the frame before attempting to access them. This prevents OOB reads caused by malformed beacon frames.

Affected products

• Linux kernel: 4.12 — fixed in 6.19

How to fix

Upgrade to a fixed version: Linux kernel 6.19. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/38292407c2bb5b2b3131aaace4ecc7a829b40b76
• https://git.kernel.org/stable/c/502ddcc405b69fa92e0add6c1714d654504f6fd7
• https://git.kernel.org/stable/c/bb5940193d813449540d8d3a82abc045be41f48a
• https://git.kernel.org/stable/c/bf323db1d883c209880bd92f3b12503e3531c3fc
• https://git.kernel.org/stable/c/c03cb111628924827351e19baa5b073e9b0d723d
• https://git.kernel.org/stable/c/c173ce97d3f0f0c0fefa39139d6d04ba60b5db22
• https://git.kernel.org/stable/c/d1ab7f9cee22e7b8a528da9ac953e4193b96cda5

Get alerted when CVE-2025-68254 or the next vulnerability affects your stack