CVE-2026-74541
Linux kernel Bluetooth ISO use-after-free leading to kernel memory corruption.
Is CVE-2026-74541 being exploited?
Not confirmed. CVE-2026-74541 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 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-74541?
CVE-2026-74541 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-2026-74541?
Yes. A fix has been recorded for CVE-2026-74541. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74541 affect?
CVE-2026-74541 affects Linux kernel (Bluetooth ISO subsystem), Desktop Linux distros, Android devices using affected kernels, Embedded Linux/IoT devices with Bluetooth. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74541?
Apply vendor/upstream kernel patches or updates immediately; disable Bluetooth if not required.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Bluetooth-triggered use-after-free can cause kernel crash, memory corruption and may allow privilege escalation or RCE via a remote/paired Bluetooth attacker.
Patch when possible
- affected>= fbdc4bc47268953c80853489f696e02d61f9a2c6 and < cc1d39946d62bc568551dfb81149724de1e91338
- affected>= fbdc4bc47268953c80853489f696e02d61f9a2c6 and < 7b51a9c25e9698b64df9f2218f10eecf7dc7e2d0
- affected>= fbdc4bc47268953c80853489f696e02d61f9a2c6 and < 63c0f396a18b767eb28e895eb95bbdce6c172c59
- affected>= fbdc4bc47268953c80853489f696e02d61f9a2c6 and < 69a4a7b162b3db6ac337e3094cdee38f24d42ff7
- affected>= fbdc4bc47268953c80853489f696e02d61f9a2c6 and < d57e506f6a1e3929611340fae87c1e4823f4d85c
- affectedc03a10bd5b6ccb22921e04bcddc987410df7e7a9
- affected>= 6.5.12 and < 6.6
- affected6.6
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.