CVE-2026-43172
Linux kernel iwlwifi: firmware LMAC overrun risk in SMEM parsing.
Is CVE-2026-43172 being exploited?
Not confirmed. CVE-2026-43172 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-43172?
CVE-2026-43172 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-2026-43172?
Yes. A fix has been recorded for CVE-2026-43172. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-43172 affect?
CVE-2026-43172 affects Linux kernel (iwlwifi). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-43172?
Upgrade to patched kernel version.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Kernel memory corruption/crash via invalid firmware LMACs; potential privilege escalation.
Patch when possible
- affected>= ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424 and < 1d49a42717bdc8de77eabeb5b7d3e88d141ffea9
- affected>= ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424 and < 2b4b1510aaaf5b9fb57327ecffc20c055f61f205
- affected>= ebfa7f8ae155c9a0bb2e4038d6b5d8b14881c424 and < 58192b9ce09b0f0f86e2036683bd542130b91a98
- affected5.8
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.