Affects the Linux kernel, a ubiquitous OS kernel; kernel memory corruption/privilege escalation impacts many organizations and warrants broad attention.
CVE-2026-89995
Linux kernel dma-direct bug can cause kernel memory corruption
Is CVE-2026-89995 being exploited?
Not confirmed. CVE-2026-89995 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 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-89995?
CVE-2026-89995 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-2026-89995?
Yes. A fix has been recorded for CVE-2026-89995. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-89995 affect?
CVE-2026-89995 affects Linux kernel (dma-direct API), Linux distributions using affected kernel versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-89995?
Apply vendor kernel updates or upgrade to fixed stable kernel
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Kernel memory corruption via dma_direct_alloc_from_pool type mismatch, enabling crashes, local privilege escalation, or arbitrary kernel code execution
Patch when possible
- affected>= 5b138c534fda57c2ebc1e6de72578aa1d70788a6 and < c3fdb94da43ff23287f85664174c45c45e881a3f
- affected>= 5b138c534fda57c2ebc1e6de72578aa1d70788a6 and < 408ff2d5bf555bd3f4c84a2edb95c0690bf9edc8
- affected>= 5b138c534fda57c2ebc1e6de72578aa1d70788a6 and < feeb2ef775081a6c188cdd10e7a45369a07ce531
- affected>= 5b138c534fda57c2ebc1e6de72578aa1d70788a6 and < 94a04ad732c9f8b9554270fc4038a06737de5c22
- affected5.10
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.