Core Linux kernel vulnerability; widely used infra; potential memory corruption and privilege escalation.
CVE-2026-43341
Linux kernel IOAM6 trace data overflow risks memory corruption.
Is CVE-2026-43341 being exploited?
Not confirmed. CVE-2026-43341 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-43341?
CVE-2026-43341 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-2026-43341?
Yes. A fix has been recorded for CVE-2026-43341. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43341 affect?
CVE-2026-43341 affects Linux kernel. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43341?
Apply patched kernel version; reboot.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Memory corruption or kernel crash; possible local privilege escalation via crafted IOAM6 trace data.
Patch when possible
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < d3a1fb2ca323d7a4e10ab3afbfa25e6d8921e4f2
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < e96d48b37708d53cbdc47f6f60b0714fc4a5f596
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < d1b041080086e91d3733a5438a8c51ad5d3d8e09
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < 77695a69baca9b99d95fad09fc78c2318736604f
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < 184d2e9db27c0f76226b5cad16fe29510a5d2280
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < d6e1c9b02d85a4f1f4ba6d68e916d9b610a3ed7d
- affected>= 8c6f6fa6772696be0c047a711858084b38763728 and < 5e67ba9bb531e1ec6599a82a065dea9040b9ce50
- affected5.15
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.