CVE-2026-64467
rust_binder refcount underflow on 32-bit Linux can cause kernel crash/use-after-free.
Is CVE-2026-64467 being exploited?
Not confirmed. CVE-2026-64467 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 0.14% probability of exploitation in the next 30 days.
How severe is CVE-2026-64467?
CVE-2026-64467 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-2026-64467?
Yes. A fix has been recorded for CVE-2026-64467. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64467 affect?
CVE-2026-64467 affects Linux kernel (rust_binder component), 32-bit ARM Linux, Android devices with 32-bit kernels, Embedded/IoT devices using 32-bit Linux. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64467?
Apply vendor kernel updates for 32-bit systems; restrict untrusted apps and reboot.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local unprivileged app can trigger refcount underflow in rust_binder on 32-bit kernels, causing use-after-free, kernel crash, and possible local privilege escalation.
Patch when possible
- affected>= eafedbc7c050c44744fbdf80bdf3315e860b7513 and < 89b8cc948dce661af87527623b3a41cdd115e2f9
- affected>= eafedbc7c050c44744fbdf80bdf3315e860b7513 and < 74920b1b4e474ba7a4de4323c0458deec49d210b
- affected>= eafedbc7c050c44744fbdf80bdf3315e860b7513 and < 803c8a9502e9b97cd6ae937618ef4a8fd6274343
- affected6.18
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.