Heap-based buffer overflow in Linux kernel - CVE-2026-80617

Vulnerability details

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to a heap-based buffer overflow in airoha_ppe_foe_verify_entry() when processing a hash value greater than or equal to half of ppe_num_entries. A local user can trigger the vulnerable code path to cause a denial of service.

The issue is caused by allocating the foe_check_time buffer with too few bytes for u16 entries.

Affected software

How to mitigate CVE-2026-80617

External References

• https://git.kernel.org/stable/c/112b5eff24e044561ee9599a0d34e0fcea1df4e0
• https://git.kernel.org/stable/c/5c121ee635680c93d7074becf14cfbaac140f80d
• https://git.kernel.org/stable/c/9f7cd1e26d2f1766438edc9b9254f2c618f9ae98

Related Security Bulletins

• Heap-based buffer overflow in Linux kernel ethernet airoha driver