Widely-used Linux kernel; core infrastructure; high CVSS; kernel memory corruption risk via IPC path.
CVE-2026-43274
Kernel IPC out-of-bounds access fixed (CVE-2026-43274).
Is CVE-2026-43274 being exploited?
Not confirmed. CVE-2026-43274 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 0.13% probability of exploitation in the next 30 days.
How severe is CVE-2026-43274?
CVE-2026-43274 is rated High with a CVSS score of 8.4. 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-2026-43274?
Yes. A fix has been recorded for CVE-2026-43274. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43274 affect?
CVE-2026-43274 affects Linux kernel. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43274?
Update to patched kernel release.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local kernel memory corruption/possible crash or privilege escalation via mailbox IPC path.
Patch when possible
- affected>= e4b1d67e71419c4af581890ecea84b04920d4116 and < 95438699c92947155823dcd3918049a07f3cd867
- affected>= e4b1d67e71419c4af581890ecea84b04920d4116 and < 0442b6229e2eedc95a6d3d18ce75dec7f5b5377c
- affected>= e4b1d67e71419c4af581890ecea84b04920d4116 and < f7c330a8c83c9b0332fd524097eaf3e69148164d
- affected6.14
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.