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Review reviewHigh

CVE-2026-64441

Linux

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr() Three IE/attribute parsing functions have missing bounds checks. rtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer without verifying that the header bytes (tag + length) are within the remaining buffer before reading them. Additionally, rtw_get_sec_ie() compares the 4-byte WPA OUI at cnt+2 without checking that at least 6 bytes remain, and rtw_get_wapi_ie() compares a 4-byte WAPI OUI at cnt+6 without checking t...

CVSS
8.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2026.07.25
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 8.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr() Three IE/attribute parsing functions have missing bounds checks. rtw_get_sec_ie() and rtw_get_wapi_ie() iterate over a raw IE buffer without verifying that the header bytes (tag + length) are within the remaining buffer before reading them. Additionally, rtw_get_sec_ie() compares the 4-byte WPA OUI at cnt+2 without checking that at least 6 bytes remain, and rtw_get_wapi_ie() compares a 4-byte WAPI OUI at cnt+6 without checking t...

Affected product and versions

Product
Linux
Affected versions
>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < efa27d487abcdec79669a60a6d94d5d6eceb7c1d, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 2ea1ce30ead61589214240e8d33d96310fd613e5, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < b27ecba3196f6c14e3809595ebd69c0c2392512a, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4b51ee8a40fe47864197d73cc02b191de7a6b072, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 729c4e72563bda0f1725db1db9ea08df06f41d9b, >= 554c0a3abf216c991c5ebddcdb2c08689ecd290b < 1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344, >= 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:H/A:H
CWE
Not available
CVE-2026-64441 — Linux | SECUFOCUS NOW