CVE-2026-97981

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

State: Published
Severity: Not scored
Published: Sep 25, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 620b7184808b25cf58268856f892b9ba83c181fdAffected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 9620e2ce9b5998ebbf157241f296f8ddb92285c2Affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 27b5753077d1cfda5fe201d2ba602de76a9a09b1Affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before e858b9b1ea3cbbc353189d07dec40dc16967e290Affected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 58140f1cebb776d174dc6ff41c15401654a5b1eaAffected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before cceb6cd7f0e5ed2944a9ca22443d7b9da82f60abAffected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 5754e0c0758805096ecfeaf4c1b146ad51ed246fAffected 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before b856c552f556bc0341c1dbe0bf88e630fd1dc4b7Affected
LinuxLinux	4.16Affected before 4.16Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.111 through 6.12.Not affected 6.18.53 through 6.18.Not affected 7.2.7 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 620b7184808b25cf58268856f892b9ba83c181fdAffected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 9620e2ce9b5998ebbf157241f296f8ddb92285c2Affected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 27b5753077d1cfda5fe201d2ba602de76a9a09b1Affected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before e858b9b1ea3cbbc353189d07dec40dc16967e290Affected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 58140f1cebb776d174dc6ff41c15401654a5b1eaAffected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before cceb6cd7f0e5ed2944a9ca22443d7b9da82f60abAffected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before 5754e0c0758805096ecfeaf4c1b146ad51ed246fAffected
4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 to before b856c552f556bc0341c1dbe0bf88e630fd1dc4b7Affected

LinuxLinux

4.16Affected
before 4.16Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.111 through 6.12.*Not affected
6.18.53 through 6.18.*Not affected
7.2.7 through 7.2.*Not affected
7.3 and laterNot affected

References

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