{"id":"CVE-2024-40999","title":"net: ena: Add validation for completion descriptors consistency","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: Add validation for completion descriptors consistency\n\nValidate that `first` flag is set only for the first\ndescriptor in multi-buffer packets.\nIn case of an …","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Linux","product":"Linux","affected":["Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < edb9a302cc9386142beffe5d9bbe4bfd36999eee","Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 42146ee5286f16f1674a84f7c274dcca65c6ff2e","Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7","Linux 4.9"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2024-09-10T17:01:22.448911Z"},"published":"2024-07-12","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:34:52.523Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-40999","references":[{"url":"https://git.kernel.org/stable/c/edb9a302cc9386142beffe5d9bbe4bfd36999eee"},{"url":"https://git.kernel.org/stable/c/42146ee5286f16f1674a84f7c274dcca65c6ff2e"},{"url":"https://git.kernel.org/stable/c/b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7"}],"tags":["cve.org"],"epss":0.00533,"epssPercentile":0.44158,"ingestedAt":"2026-10-21T12:48:53.736Z","slug":"CVE-2024-40999","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: Add validation for completion descriptors consistency\n\nValidate that `first` flag is set only for the first\ndescriptor in multi-buffer packets.\nIn case of an invalid descriptor, a reset will occur.\nA new reset reason for RX data corruption has been added.\n\n## Affected\n\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < edb9a302cc9386142beffe5d9bbe4bfd36999eee`\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 42146ee5286f16f1674a84f7c274dcca65c6ff2e`\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < b37b98a3a0c1198bafe8c2d9ce0bc845b4e7a9a7`\n- `Linux 4.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}