CVE-2026-43172: wifi: iwlwifi: fix 22000 series SMEM parsing
CSIRTS triage
- What
- Incorrect parsing of SMEM in Intel 22000 series WiFi driver (iwlwifi) may expose memory or cause undefined behavior.
- Who is affected
- Systems using iwlwifi driver with Intel 22000 series WiFi adapters.
- Urgency
- Medium urgency; information disclosure risk but not actively exploited.
- Action
- Apply the Linux kernel patch correcting SMEM parsing in iwlwifi 22000 series driver.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-43172
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-431720.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-43172 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for wifi
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highCVE-2026-64586: In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: drain bus_…nvd · 2026-08-06
- mediumCVE-2024-40977: wifi: mt76: mt7921s: fix potential hung tasks during chip recoverymsrc · 2026-08-06
- mediumCVE-2025-71227: wifi: mac80211: don't WARN for connections on invalid channelsmsrc · 2026-08-06
- lowCVE-2026-64571: wifi: p54: validate RX frame length in p54_rx_eeprom_readback()msrc · 2026-08-06
- mediumCVE-2024-36922: wifi: iwlwifi: read txq->read_ptr under lockmsrc · 2026-08-06
- highCVE-2024-56609: wifi: rtw88: use ieee80211_purge_tx_queue() to purge TX skbmsrc · 2026-08-06
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