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CVE-2026-97981

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

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 2 more
None on Exploit-DB, Metasploit or GitHub

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.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in 620b7184808b25cf58268856f892b9ba83c181fd; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in 9620e2ce9b5998ebbf157241f296f8ddb92285c2; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in 27b5753077d1cfda5fe201d2ba602de76a9a09b1; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in e858b9b1ea3cbbc353189d07dec40dc16967e290; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in 58140f1cebb776d174dc6ff41c15401654a5b1ea; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in cceb6cd7f0e5ed2944a9ca22443d7b9da82f60ab; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in 5754e0c0758805096ecfeaf4c1b146ad51ed246f; From 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 · fixed in b856c552f556bc0341c1dbe0bf88e630fd1dc4b7

  • Linux Linux

    4.16

  • KernelLinux

    From 4.16.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53; From 6.19.0 · fixed in 7.2.7

References 8

git.kernel.org