CVE-2024-43848

What it actually does

The TTLM teardown worker calculates an incorrect sdata pointer, leading to a crash when the worker executes in the mac80211 subsystem.

Why it matters to the business

Potential wireless networking instability or denial of service in Linux-based systems with 320 downstream dependents; low exploitation likelihood reduces immediate urgency despite the memory corruption classification.

How an attack unfolds

An attacker would need to trigger conditions that activate the TTLM teardown worker in mac80211; once running, the wrong pointer dereference causes a kernel crash, but no public exploitation or threat actor campaigns are associated.

How to fix it

Update affected Linux kernel packages to versions containing the fix for the TTLM teardown worker pointer calculation; for the structs Maven plugin, upgrade to 338.v848422169819.

How to confirm the fix worked

Confirm kernel or plugin versions match fixed releases and test wireless teardown scenarios to ensure no crashes occur.

Typical attack path

1. Trigger wireless network events that schedule the TTLM teardown worker
2. Worker executes with miscalculated sdata pointer
3. Kernel crash occurs due to invalid memory access

How to detect it

Review kernel logs for mac80211 or TTLM teardown related crashes and monitor for unexpected wireless subsystem failures.

What your security team should do

• Prioritize patching systems with wireless networking enabled due to potential crash impact
• Monitor for any new EPSS increases or exploitation reports
• Apply the fixed structs version 338.v848422169819 across Maven dependencies