CVE-2026-74651
Kernel OOB read in rtl8723bs driver via crafted Wi‑Fi IE
Is CVE-2026-74651 being exploited?
Not confirmed. CVE-2026-74651 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 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-74651?
CVE-2026-74651 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-2026-74651?
Yes. A fix has been recorded for CVE-2026-74651. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74651 affect?
CVE-2026-74651 affects Linux kernel (staging rtl8723bs driver), Devices using Realtek RTL8723BS Wi‑Fi, Embedded systems/laptops with that driver. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74651?
Update Linux kernel or apply vendor patch immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can send crafted Wi‑Fi management IEs to trigger out‑of‑bounds reads, causing kernel crashes, info leaks or potential privilege escalation/RCE.
Patch when possible
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 4fc459c5cd8767ca4d9bf2f7becbd562639ba4d9
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < b45be82387bf759931acdd21ca7dfe740f16eb97
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < c9068f82a0906b29c905e8788edb62c3208c7c8a
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 0d19f0600fbb610c42f2a86f95c35706dc04691b
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 42c5a0d454aa5b54fec17162d9a1f8c30f8af45a
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < e167a38a8a8f50f137721fef1a1fbba0f4588b5d
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 01ab275f8f3e497a13ebbe4ded44ec0623bccde3
- affected>= 554c0a3abf216c991c5ebddcdb2c08689ecd290b and < 1c3e23e78862493e8cf1adad02b10ffcb8b9921c
- 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.