CVE-2026-64536

staging: rtl8723bs: fix OOB reads in is_ap_in_tkip() IE loop

HIGH
8.1
CVSS Score
Published: July 27, 2026 at 06:36 AM UTC
Updated: October 19, 2026 at 09:17 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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().

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.12554c0a3abf216c991c5ebddcdb2c08689ecd290b
Vendor states this is fixed in 204b22c8df115370037248859bf0fa62db73a396 (fixed)
Vendor states this is fixed in 3bf39f711ff27c64be8680a8938bcc5001982e81 (fixed)
Vendor states this is fixed in 4380b3860d887a13555ff024a58dfc05b490dfd6 (fixed)
Vendor states this is fixed in 6f26cc55affd9d7f88ae2f5d12db4ecf9072c209 (fixed)
Vendor states this is fixed in a6105ea8ca6ebbc04beaf3bcbf7dbb5985f5d395 (fixed)
Vendor states this is fixed in d2055332297e24c63fffda943ef7a5eefc0a6019 (fixed)
Vendor states this is fixed in ea3809f7e20bdff282b8cc1e94937d5fb9fb32c7 (fixed)
Vendor states this is fixed in 4.12 (unaffected)
Vendor states this is fixed in 5.15.212 (unaffected)
Vendor states this is fixed in 6.1.178 (unaffected)
Vendor states this is fixed in 6.12.96 (unaffected)
Vendor states this is fixed in 6.18.39 (unaffected)
Vendor states this is fixed in 6.6.145 (unaffected)
Vendor states this is fixed in 7.1.4 (unaffected)
Vendor states this is fixed in 7.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.1HIGHLinux
Vector?

Quick Info

StatusRECEIVED
CWE
CWE-125

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