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Review reviewHigh

CVE-2025-68254

Linux

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 a...

CVSS
7.1
EPSS
0.25%
16.8% percentile
CISA KEV
Not listed
Published
2025.12.17
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.25%
Technical severityCVSS 7.1

Vulnerability overview

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 a...

Affected product and versions

Product
Linux
Affected versions
>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < c03cb111628924827351e19baa5b073e9b0d723d, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < bb5940193d813449540d8d3a82abc045be41f48a, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < c173ce97d3f0f0c0fefa39139d6d04ba60b5db22, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < d1ab7f9cee22e7b8a528da9ac953e4193b96cda5, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 38292407c2bb5b2b3131aaace4ecc7a829b40b76, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < bf323db1d883c209880bd92f3b12503e3531c3fc, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 502ddcc405b69fa92e0add6c1714d654504f6fd7, >= 4.12
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE
Not available