CVE-2026-74545
Double-free in Linux rtase driver causing kernel memory corruption and crashes.
Is CVE-2026-74545 being exploited?
Not confirmed. CVE-2026-74545 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 0.46% probability of exploitation in the next 30 days.
How severe is CVE-2026-74545?
CVE-2026-74545 is rated Critical with a CVSS score of 9.8. 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-2026-74545?
Yes. A fix has been recorded for CVE-2026-74545. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74545 affect?
CVE-2026-74545 affects Linux kernel (rtase network driver). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74545?
Install Linux kernel/vendor driver update immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker can trigger a double-free via network transmit, causing kernel crash (DoS) and possible local privilege escalation.
Patch when possible
- affected>= d6e882b89fdf80be0ab4f914ec10f75215e49495 and < 4f09172aff5f73a5e914f4fbc0d00a1c2ea9f7cb
- affected>= d6e882b89fdf80be0ab4f914ec10f75215e49495 and < db986098f30881fafcc752800aa3b13fd289c922
- affected>= d6e882b89fdf80be0ab4f914ec10f75215e49495 and < de691dc3227b061c4d0beba9f0128fe1ff33dd68
- affected>= d6e882b89fdf80be0ab4f914ec10f75215e49495 and < 6fb7b769d6ed6d1d2e02af4a80e57a2477f35086
- affected6.12
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.