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Review reviewHigh

CVE-2026-64536

Linux

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop The loop in is_ap_in_tkip() iterates over IEs without verifying that enough bytes remain before dereferencing the IE header or its payload: - pIE->element_id and pIE->length are read without checking that i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the buffer causes an OOB read. - For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12, which requires pIE->length >= 16. For WLAN_EID_RSN it compares pIE->data + 8, requiring pIE->length >= 1...

CVSS
8.1
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.27
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8.1

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop The loop in is_ap_in_tkip() iterates over IEs without verifying that enough bytes remain before dereferencing the IE header or its payload: - pIE->element_id and pIE->length are read without checking that i + sizeof(*pIE) <= ie_length, so a truncated IE at the end of the buffer causes an OOB read. - For WLAN_EID_VENDOR_SPECIFIC the code compares pIE->data + 12, which requires pIE->length >= 16. For WLAN_EID_RSN it compares pIE->data + 8, requiring pIE->length >= 1...

Affected product and versions

Product
Linux
Affected versions
>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < d2055332297e24c63fffda943ef7a5eefc0a6019, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 204b22c8df115370037248859bf0fa62db73a396, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4380b3860d887a13555ff024a58dfc05b490dfd6, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 3bf39f711ff27c64be8680a8938bcc5001982e81, >= 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:H/I:N/A:H
CWE
Not available