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.
CVSS
7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before c03cb111628924827351e19baa5b073e9b0d723d; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before bb5940193d813449540d8d3a82abc045be41f48a; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before c173ce97d3f0f0c0fefa39139d6d04ba60b5db22; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before d1ab7f9cee22e7b8a528da9ac953e4193b96cda5; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 38292407c2bb5b2b3131aaace4ecc7a829b40b76; from 554c0a3abf216c991c5ebddcdb2c08689ecd290b before bf323db1d883c209880bd92f3b12503e3531c3fc; 554c0a3abf216c991c5ebddcdb2c08689ecd290b builds before 502ddcc405b69fa92e0add6c1714d654504f6fd7
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.
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