{"id":"CVE-2026-97981","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Count dropped frames as NAPI work\n\nThe RX loop only consumes budget when it successfully delivers a frame.\nError paths keep consuming descriptor…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Count dropped frames as NAPI work\n\nThe RX loop only consumes budget when it successfully delivers a frame.\nError paths keep consuming descriptor…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"Linux","product":"Linux","affected":["Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 620b7184808b25cf58268856f892b9ba83c181fd","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 9620e2ce9b5998ebbf157241f296f8ddb92285c2","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 27b5753077d1cfda5fe201d2ba602de76a9a09b1","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < e858b9b1ea3cbbc353189d07dec40dc16967e290","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 58140f1cebb776d174dc6ff41c15401654a5b1ea","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < cceb6cd7f0e5ed2944a9ca22443d7b9da82f60ab","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < 5754e0c0758805096ecfeaf4c1b146ad51ed246f","Linux >= 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88 < b856c552f556bc0341c1dbe0bf88e630fd1dc4b7","Linux 4.16"],"published":"2026-09-25","updated":"2026-10-03","sourceUpdated":"2026-10-03T11:18:22.150","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-97981","references":[{"url":"https://git.kernel.org/stable/c/27b5753077d1cfda5fe201d2ba602de76a9a09b1","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5754e0c0758805096ecfeaf4c1b146ad51ed246f","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/58140f1cebb776d174dc6ff41c15401654a5b1ea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/620b7184808b25cf58268856f892b9ba83c181fd","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/9620e2ce9b5998ebbf157241f296f8ddb92285c2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b856c552f556bc0341c1dbe0bf88e630fd1dc4b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cceb6cd7f0e5ed2944a9ca22443d7b9da82f60ab","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e858b9b1ea3cbbc353189d07dec40dc16967e290","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97981.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-97981"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541184"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97981"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97981"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-97981.mbox"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00176,"epssPercentile":0.07122,"cvssSource":"vendor","ingestedAt":"2026-09-25T11:06:38.868Z","slug":"CVE-2026-97981","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Count dropped frames as NAPI work\n\nThe RX loop only consumes budget when it successfully delivers a frame.\nError paths keep consuming descriptors without reducing the budget, so a\nstream of bad frames can process the entire receive ring in one poll.\n\nMove the budget accounting to a common end-of-frame path. This counts\neach completed frame as NAPI work whether it was delivered or dropped,\nmatching the behavior of the vendor driver.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-09-30 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-97981.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":213311,"id":"CVE-2026-97981","ts":1790754686879,"field":"cvss","old":null,"new":"5.5"},{"seq":213310,"id":"CVE-2026-97981","ts":1790754686879,"field":"severity","old":"none","new":"medium"}]}