{"id":"CVE-2026-63857","revision":"ec32478a79064441b062151e3a5ca9e7","records":[{"revision":"ec32478a79064441b062151e3a5ca9e7","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-63857","aliases":[],"title":"net: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: Do not read uninitialized fragment address in airoha_dev_xmit()\n\nThe transmit loop in airoha_dev_xmit() reads fragment address and length\nduring its final iteration, when the loop index equals\nskb_shinfo(skb)->nr_frags, at which point the fragment data is\nuninitialized. While these values are never consumed, the read itself is\nunsafe and may trigger a page fault. Fix this by avoiding the fragment\nread on the last iteration.\nAdditionally, move the skb pointer from the first to the last used packet\ndescriptor, so that airoha_qdma_tx_napi_poll() defers freeing the skb\nuntil the final descriptor is processed.","state":0,"publishedAt":"2026-07-19T14:04:46.339+00:00","modifiedAt":"2026-10-21T12:42:41.508+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/airoha/airoha_eth.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"23020f04932701d5c8363e60756f12b43b8ed752\",\n                            \"lessThan\": \"dba5f4959653e4c212beb746594952e8645d1115\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"23020f04932701d5c8363e60756f12b43b8ed752\",\n                            \"lessThan\": \"f670fa4b19ceddc6d215dda4997888ccba9bbc61\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"23020f04932701d5c8363e60756f12b43b8ed752\",\n                            \"lessThan\": \"d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"23020f04932701d5c8363e60756f12b43b8ed752\",\n                            \"lessThan\": \"bde34e84edc8b5571fbde7e941e175a4293ee1eb\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"drivers/net/ethernet/airoha/airoha_eth.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.11\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.11\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.114\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.33\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.0.10\",\n                            \"lessThanOrEqual\": \"7.0.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://git.kernel.org/stable/c/dba5f4959653e4c212beb746594952e8645d1115","https://git.kernel.org/stable/c/f670fa4b19ceddc6d215dda4997888ccba9bbc61","https://git.kernel.org/stable/c/d78c8ab7bd84952e053d0c622b7fc1b4ad8a19a3","https://git.kernel.org/stable/c/bde34e84edc8b5571fbde7e941e175a4293ee1eb"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-63857","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-63857","identifiers":["CVE-2026-63857"]},"retained":false,"historicalAffected":[]}],"coverage":[]}