High severity · published Jul 25, 2026
CVE-2026-64441
staging: rtl8723bs: fix OOB reads in rtw_get_sec_ie(), rtw_get_wapi_ie(), and rtw_get_wps_attr()
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
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 that at least 10 bytes remain. rtw_get_wps_attr() reads wps_ie[0] and wps_ie+2 unconditionally at entry, before verifying that wps_ielen is large enough to contain the 6-byte WPS IE header (element_id + length + 4-byte OUI). Inside the attribute loop, get_unaligned_be16() is called on attr_ptr and attr_ptr+2 without checking that 4 bytes remain in the buffer. Add a cnt+2 bounds check before each loop body in rtw_get_sec_ie() and rtw_get_wapi_ie(), guard each multi-byte comparison with a minimum IE length requirement, add a wps_ielen < 6 early return in rtw_get_wps_attr(), and add a 4-byte bounds check in its inner loop.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
4.12 before 5.15.212; 5.16 before 6.1.178; 6.2 before 6.6.145; 6.7 before 6.12.97; 6.13 before 6.18.40; 6.19 before 7.1.4; +2 more · source: NVD
LI
Linux · Linux
554c0a3abf216c991c5ebddcdb2c08689ecd290b before efa27d487abcdec79669a60a6d94d5d6eceb7c1d; 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 2ea1ce30ead61589214240e8d33d96310fd613e5; 554c0a3abf216c991c5ebddcdb2c08689ecd290b before b27ecba3196f6c14e3809595ebd69c0c2392512a; 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c; 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 4b51ee8a40fe47864197d73cc02b191de7a6b072; 554c0a3abf216c991c5ebddcdb2c08689ecd290b before 729c4e72563bda0f1725db1db9ea08df06f41d9b; +2 more · source: vendor