CVE-2026-64536

High

Description

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().

SeverityHigh
CVSS8.1
Exploit probability18. percentile0.3%
ProductLinux
PublishedJul 27, 2026
First seenJul 27, 2026

How to fix

Update
  • Linux Linuxea3809f7e20bdff282b8cc1e94937d5fb9fb32c7, d2055332297e24c63fffda943ef7a5eefc0a6019, 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209, 204b22c8df115370037248859bf0fa62db73a396, a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395, 4380b3860d887a13555ff024a58dfc05b490dfd6, 3bf39f711ff27c64be8680a8938bcc5001982e81 or later

Affected products

ProductAffected versionsFixed in
Linux Linux554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < d2055332297e24c63fffda943ef7a5eefc0a6019, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < 204b22c8df115370037248859bf0fa62db73a396, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < 4380b3860d887a13555ff024a58dfc05b490dfd6, 554c0a3abf216c991c5ebddcdb2c08689ecd290b ≤ v < 3bf39f711ff27c64be8680a8938bcc5001982e81, 4.12ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7, d2055332297e24c63fffda943ef7a5eefc0a6019, 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209, 204b22c8df115370037248859bf0fa62db73a396, a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395, 4380b3860d887a13555ff024a58dfc05b490dfd6, 3bf39f711ff27c64be8680a8938bcc5001982e81

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.