CVE-2026-80617 net: airoha: fix foe_check_time allocation size
A heap buffer overflow in the Airoha PPE driver allows attackers to cause a kernel crash via improper memory allocation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-80617?
CVE-2026-80617 is a critical memory corruption vulnerability in Linux, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
net: airoha: fix foe_check_time allocation size
foe_check_time is declared as u16 pointer but was allocated with only ppe_num_entries bytes instead of ppe_num_entries * sizeof(u16).
When airoha_ppe_foe_verify_entry() is called with hash >= ppe_num_entries/2, it writes beyond the allocated buffer, causing heap buffer overflow and potential kernel crash.
Which versions are affected by CVE-2026-80617?
How do I fix CVE-2026-80617?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-80617 being exploited?
There is no known exploitation of CVE-2026-80617 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-80617, GHSA-9xc5-vpm2-h2hw, UBUNTU-CVE-2026-80617.