CVE-2026-97981

Summary

In the Linux kernel, the following vulnerability has been resolved:

net: ethernet: cortina: Count dropped frames as NAPI work

The RX loop only consumes budget when it successfully delivers a frame. Error paths keep consuming descriptors without reducing the budget, so a stream of bad frames can process the entire receive ring in one poll.

Move the budget accounting to a common end-of-frame path. This counts each completed frame as NAPI work whether it was delivered or dropped, matching the behavior of the vendor driver.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 620b7184808b25cf58268856f892b9ba83c181fdaffected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 9620e2ce9b5998ebbf157241f296f8ddb92285c2affected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 27b5753077d1cfda5fe201d2ba602de76a9a09b1affected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < e858b9b1ea3cbbc353189d07dec40dc16967e290affected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 58140f1cebb776d174dc6ff41c15401654a5b1eaaffected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < cceb6cd7f0e5ed2944a9ca22443d7b9da82f60abaffected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 5754e0c0758805096ecfeaf4c1b146ad51ed246faffected
LinuxLinux4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < b856c552f556bc0341c1dbe0bf88e630fd1dc4b7affected
LinuxLinux4.16affected
LinuxLinux0 < 4.16unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2.7 <= 7.2.*unaffected
LinuxLinux7.3-rc3 <= *unaffected

Weaknesses

References