{"id":"CVE-2026-98486","title":"net: ena: fix MMIO read buffer leak on probe failure","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: fix MMIO read buffer leak on probe failure\n\nena_device_init() initializes the MMIO read mechanism with\nena_com_mmio_reg_read_request_init(), which allocates a…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 7bd3e9a2d0c288e54f51df260d9433163f5fbc1e","Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 30ff01b4c7e419bb70f40f01dcd7f6af680808b3","Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 47785f9f638b064ce6e32e8e3b6f1ffd83849fc2","Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 9476b4468862927297c94c440863cd8ed1e7cc83","Linux 4.9"],"published":"2026-10-18","updated":"2026-10-18","sourceUpdated":"2026-10-18T15:16:03.002Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98486","references":[{"url":"https://git.kernel.org/stable/c/7bd3e9a2d0c288e54f51df260d9433163f5fbc1e"},{"url":"https://git.kernel.org/stable/c/30ff01b4c7e419bb70f40f01dcd7f6af680808b3"},{"url":"https://git.kernel.org/stable/c/47785f9f638b064ce6e32e8e3b6f1ffd83849fc2"},{"url":"https://git.kernel.org/stable/c/9476b4468862927297c94c440863cd8ed1e7cc83"}],"tags":["cve.org"],"ingestedAt":"2026-10-18T15:45:12.294Z","slug":"CVE-2026-98486","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet: ena: fix MMIO read buffer leak on probe failure\n\nena_device_init() initializes the MMIO read mechanism with\nena_com_mmio_reg_read_request_init(), which allocates a coherent DMA\nbuffer for MMIO read responses.\n\nThe normal removal path releases this buffer through\nena_com_mmio_reg_read_request_destroy(). However, if ena_probe() fails\nafter ena_device_init() succeeds, the error path destroys the admin\nresources and eventually frees ena_dev without destroying the MMIO read\nrequest, leaving the coherent DMA buffer allocated.\n\nCall ena_com_mmio_reg_read_request_destroy() in the probe error path\nbefore releasing the remaining device resources.\n\nThis issue was found by manual code inspection.\n\n## Affected\n\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 7bd3e9a2d0c288e54f51df260d9433163f5fbc1e`\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 30ff01b4c7e419bb70f40f01dcd7f6af680808b3`\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 47785f9f638b064ce6e32e8e3b6f1ffd83849fc2`\n- `Linux >= 1738cd3ed342294360d6a74d4e58800004bff854 < 9476b4468862927297c94c440863cd8ed1e7cc83`\n- `Linux 4.9`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}