CVE-2026-74328
Linux kernel iommufd/dma-buf race can destroy pages prematurely during detach.
Is CVE-2026-74328 being exploited?
Not confirmed. CVE-2026-74328 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 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-74328?
CVE-2026-74328 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-2026-74328?
Yes. A fix has been recorded for CVE-2026-74328. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-74328 affect?
CVE-2026-74328 affects Linux kernel (iommufd, dma-buf subsystem). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-74328?
Apply vendor/kernel updates that include the iommufd/dma-buf fix immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local process abusing iommufd/dma-buf detach can trigger use-after-free or data corruption, potentially causing info leak or privilege escalation.
Patch when possible
- affected>= 71db84a092c399f434976d0522e848e9803cd51a and < 0507fcedbdcc87281ef8639c045fc9980363bbb6
- affected>= 71db84a092c399f434976d0522e848e9803cd51a and < f2d70dbd3dcefa8e3c380beff9c31f5f033a4221
- affected6.19
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.