{"id":"CVE-2026-97957","revision":"b0d0d13cfd2d4e81a805e2702f2244ab","records":[{"revision":"b0d0d13cfd2d4e81a805e2702f2244ab","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97957","aliases":[],"title":"net: hinic: fix mailbox segment buffer overflow","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hinic: fix mailbox segment buffer overflow\n\ncheck_mbox_seq_id_and_seg_len() validates that seq_id does not\nexceed SEQ_ID_MAX_VAL (42) and seg_len does not exceed\nMBOX_SEG_LEN (48).  However, this allows the last segment\n(seq_id=42) to carry a full 48-byte payload, writing to offset\n42*48=2016 for 48 bytes (ending at byte 2064).  The receive\nbuffer is only MBOX_MAX_BUF_SZ (2048) bytes, resulting in a\n16-byte heap buffer overflow.\n\nThe hinic3 driver already handles this correctly by defining\nMBOX_LAST_SEG_MAX_LEN and rejecting the last segment when it\nexceeds the remaining buffer space.  Apply the same fix to the\nhinic driver.","state":0,"publishedAt":"2026-09-25T10:23:03.153+00:00","modifiedAt":"2026-10-19T09:11:23.333+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/huawei/hinic/hinic_hw_mbox.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"7cc974799fde846eda2d8f00ad4f8e1810eb0499\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"8de1e23bd91fe3a6683e4bc574e2d6bcb0eef920\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"72be1fd5d256dde748c0905c5e1749a119cad5bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"c622bbc212207d7c6bbd69dd88f0c3a3f5853d16\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"eca54a092d5f7b497b458ff5a6f66d4f7bfb6674\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"9f6ad383901d0cb1c8ea5f7f3160fabfe1540eb5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"513f7b16ed0cffae9348151c72bed17c7073096f\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"a425b6e1c69ba907b72b737a4d44f8cfbc43ce3c\",\n                            \"lessThan\": \"5d4d985957434867bbe85e4fa5e638f3e48ad522\",\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/huawei/hinic/hinic_hw_mbox.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"5.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"5.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.271\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.222\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.189\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/7cc974799fde846eda2d8f00ad4f8e1810eb0499","https://git.kernel.org/stable/c/8de1e23bd91fe3a6683e4bc574e2d6bcb0eef920","https://git.kernel.org/stable/c/72be1fd5d256dde748c0905c5e1749a119cad5bd","https://git.kernel.org/stable/c/c622bbc212207d7c6bbd69dd88f0c3a3f5853d16","https://git.kernel.org/stable/c/eca54a092d5f7b497b458ff5a6f66d4f7bfb6674","https://git.kernel.org/stable/c/9f6ad383901d0cb1c8ea5f7f3160fabfe1540eb5","https://git.kernel.org/stable/c/513f7b16ed0cffae9348151c72bed17c7073096f","https://git.kernel.org/stable/c/5d4d985957434867bbe85e4fa5e638f3e48ad522"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97957","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97957","identifiers":["CVE-2026-97957"]},"retained":false,"historicalAffected":[]}],"coverage":[]}