{"id":"CVE-2026-98486","state":"PUBLISHED","title":"net: ena: fix MMIO read buffer leak on probe failure","description":"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 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.","publishedAt":"2026-10-18T15:16:03.002Z","updatedAt":"2026-10-30T12:38:16.404Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"9de940a3c5731be5a544f6f366576cc4dc073f7c","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"4b90112826439149dcee20e73d02f25ae0e2a9fb","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"0d31edc7ff1f7f265c11248819dfaf5a8274b209","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"7bd3e9a2d0c288e54f51df260d9433163f5fbc1e","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"30ff01b4c7e419bb70f40f01dcd7f6af680808b3","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"47785f9f638b064ce6e32e8e3b6f1ffd83849fc2","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"9476b4468862927297c94c440863cd8ed1e7cc83","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amazon/ena/ena_netdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amazon/ena/ena_netdev.c"]}],"references":["https://git.kernel.org/stable/c/9de940a3c5731be5a544f6f366576cc4dc073f7c","https://git.kernel.org/stable/c/4b90112826439149dcee20e73d02f25ae0e2a9fb","https://git.kernel.org/stable/c/0d31edc7ff1f7f265c11248819dfaf5a8274b209","https://git.kernel.org/stable/c/a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c","https://git.kernel.org/stable/c/7bd3e9a2d0c288e54f51df260d9433163f5fbc1e","https://git.kernel.org/stable/c/30ff01b4c7e419bb70f40f01dcd7f6af680808b3","https://git.kernel.org/stable/c/47785f9f638b064ce6e32e8e3b6f1ffd83849fc2","https://git.kernel.org/stable/c/9476b4468862927297c94c440863cd8ed1e7cc83"],"weaknesses":[],"ingestedAt":"2026-10-30T12:58:04.520Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98486.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98486","state":"PUBLISHED","datePublished":"2026-10-18T15:16:03.002Z","dateUpdated":"2026-10-30T12:38:16.404Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.352Z"},"containers":{"cna":{"title":"net: ena: fix MMIO read buffer leak on probe failure","descriptions":[{"lang":"en","value":"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 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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"9de940a3c5731be5a544f6f366576cc4dc073f7c","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"4b90112826439149dcee20e73d02f25ae0e2a9fb","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"0d31edc7ff1f7f265c11248819dfaf5a8274b209","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"7bd3e9a2d0c288e54f51df260d9433163f5fbc1e","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"30ff01b4c7e419bb70f40f01dcd7f6af680808b3","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"47785f9f638b064ce6e32e8e3b6f1ffd83849fc2","versionType":"git"},{"version":"1738cd3ed342294360d6a74d4e58800004bff854","status":"affected","lessThan":"9476b4468862927297c94c440863cd8ed1e7cc83","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amazon/ena/ena_netdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.9","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.55","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.9","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/amazon/ena/ena_netdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/9de940a3c5731be5a544f6f366576cc4dc073f7c"},{"url":"https://git.kernel.org/stable/c/4b90112826439149dcee20e73d02f25ae0e2a9fb"},{"url":"https://git.kernel.org/stable/c/0d31edc7ff1f7f265c11248819dfaf5a8274b209"},{"url":"https://git.kernel.org/stable/c/a0f5fd7a285f44fa402242f26feddfe1d4a0fc6c"},{"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:38:16.404Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"6.18.55"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.2.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}