CVE-2026-64536

Summary

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 >= 12. Neither requirement is checked.

Add the missing IE header and payload bounds checks and guard each data access with an explicit pIE->length minimum, matching the pattern established in update_beacon_info().

Affected Software

VendorProductVersion RangeStatus
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < d2055332297e24c63fffda943ef7a5eefc0a6019affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 204b22c8df115370037248859bf0fa62db73a396affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 4380b3860d887a13555ff024a58dfc05b490dfd6affected
LinuxLinux554c0a3abf216c991c5ebddcdb2c08689ecd290b < 3bf39f711ff27c64be8680a8938bcc5001982e81affected
LinuxLinux4.12affected
LinuxLinux0 < 4.12unaffected
LinuxLinux5.15.212 <= 5.15.*unaffected
LinuxLinux6.1.178 <= 6.1.*unaffected
LinuxLinux6.6.145 <= 6.6.*unaffected
LinuxLinux6.12.96 <= 6.12.*unaffected
LinuxLinux6.18.39 <= 6.18.*unaffected
LinuxLinux7.1.4 <= 7.1.*unaffected
LinuxLinux7.2-rc3 <= *unaffected

Weaknesses

References