CVE-2026-64442
Linux rtl8723bs driver OOB read from malformed AP IEs allowing kernel crash or data leak
Is CVE-2026-64442 being exploited?
Not confirmed. CVE-2026-64442 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-64442?
CVE-2026-64442 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-64442?
Yes. A fix has been recorded for CVE-2026-64442. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64442 affect?
CVE-2026-64442 affects Linux kernel (rtl8723bs driver), Devices with Realtek RTL8723BS Wi‑Fi (laptops, embedded systems). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64442?
Install vendor/kernel update for rtl8723bs and avoid untrusted Wi‑Fi APs until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker controlling a Wi‑Fi AP can trigger kernel OOB reads via crafted IEs, causing crashes (DoS) or potential information disclosure.
Patch when possible
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < bc881c9915c4468747d0ca5fd1abd7b313cfb0f4
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 605ebd94d0f469204f3c9f2f84acc71e43e2780f
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < a830bdc82461353bf7b1f8a2ad2689bf5d2de444
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 4c21eec80cf502d9ea18e0b946246b2376452786
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < ad2637c46ef8b8ae0894372a2d39fdfcdc420a1e
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < c38d16b1ffac385c9e4b38447cd5c46af1114b58
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 402f13ec95945f34a210b28df1f8740d3d4a58c5
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < ef61d628dfad38fead1fd2e08979ae9126d011d5
- affected4.12
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.