What happened
In the Linux kernel, the following vulnerability has been resolved: net: bcmasp: fix tx_spb_ring_full() checking same slot cnt times The loop initialised next_index from intf->tx_spb_index on every iteration, so incr_ring() always produced the same result and only one slot was ever tested. Move the initialisation before the loop so each iteration advances next_index and the function correctly checks that cnt consecutive descriptor slots are available before allowing a new transmission.
Affected versions
Linux: 490cb412007de593e07c1d3e2b1ec4233886707c through before f7f7a16dd46ace4e221336a184c7806f7de19547 (git); 490cb412007de593e07c1d3e2b1ec4233886707c through before a8bddab54aa68b407f12294acb05bd552fb6a492 (git); 490cb412007de593e07c1d3e2b1ec4233886707c through before 5df7ecd302488287665ab9767bacba7ed7e2842f (git); 490cb412007de593e07c1d3e2b1ec4233886707c through before 0c5cf62e72d7a666ee4da757e122dc1600df1ecc (git); 6.6 Fixed: See vendor advisory.
Why it matters
Review the vendor advisory and exposure of the affected product to determine operational impact.
Detection & mitigation
- Apply vendor-provided updates or mitigations.
- Review affected product exposure and access logs.
Public PoC references
No public PoC reference has passed the current publication threshold.