CVE-2026-64441
OOB reads in rtl8723bs Wi‑Fi driver IE parsing allowing remote crash or memory disclosure
Is CVE-2026-64441 being exploited?
Not confirmed. CVE-2026-64441 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-64441?
CVE-2026-64441 is rated High with a CVSS score of 8.8. 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-2026-64441?
Yes. A fix has been recorded for CVE-2026-64441. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64441 affect?
CVE-2026-64441 affects Linux kernel (staging/rtl8723bs driver), Devices using Realtek RTL8723BS on Linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64441?
Apply the Linux kernel update that fixes rtl8723bs; restrict untrusted Wi‑Fi; reboot affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted Wi‑Fi IEs can trigger kernel out-of-bounds reads, enabling remote kernel crash (DoS) and potential kernel memory disclosure; may aid privilege escalation.
Patch when possible
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < efa27d487abcdec79669a60a6d94d5d6eceb7c1d
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 2ea1ce30ead61589214240e8d33d96310fd613e5
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < b27ecba3196f6c14e3809595ebd69c0c2392512a
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 6ab1161e539fb7a1c8b35ff5a6ced4702e855b9c
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 4b51ee8a40fe47864197d73cc02b191de7a6b072
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 729c4e72563bda0f1725db1db9ea08df06f41d9b
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 1463ca3ec6601cbb097d8d87dbf5dcf1cb86a344
- 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.