{"id":"CVE-2026-68125","revision":"0c2653a1530a4c86bd4f04a8c9b08a45","records":[{"revision":"0c2653a1530a4c86bd4f04a8c9b08a45","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-68125","aliases":[],"title":"mac802154: llsec: reject frames shorter than the authentication tag","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmac802154: llsec: reject frames shorter than the authentication tag\n\nllsec_do_decrypt_auth() computes the associated-data length for the\nAEAD request as\n\n\tassoclen += datalen - authlen;\n\nwhere datalen is the number of bytes after the MAC header and authlen\n(4, 8 or 16) is the length of the authentication tag. Nothing verifies\nthat the frame actually carries at least authlen payload bytes. A\nsecured frame whose payload is shorter than the tag makes\ndatalen - authlen negative; assoclen is then passed to\naead_request_set_ad() as an unsigned value close to 4 GiB, so\ncrypto_aead_decrypt() walks far off the end of the scatterlist that\nonly spans the real frame.\n\nThe frame is fully attacker-controlled and reaches this path from any\nIEEE 802.15.4 peer in radio range. Reject frames whose payload is\nshorter than the authentication tag before the subtraction.\n\nDynamically reproduced on a KASAN kernel as a general-protection-fault\nin the AEAD scatterwalk, and the fix confirmed.","state":0,"publishedAt":"2026-08-10T11:58:46.198+00:00","modifiedAt":"2026-10-19T20:58:52.09+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                        \"net/mac802154/llsec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"f27ce82eb04960465df71634b196a48a4ecafd50\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"2d6b42a61373144298070668fddf06efe79cf2ff\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"ec7e62d77193131227df49d654d118fdf5a59892\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"5bbf0cd9b6a7076af86c75e87e180099be2e11ae\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"de80808f37d99c6dc67bb6f97eea00c8f57a8821\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"f20dedce0429b293d4bad604e0d3f65d8ac96c83\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"e09e0301d616c1ef38a5e64e8e4326fd39df13cc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"4c14a2fb5d143e4ed94143be2b8c1961b47df9af\",\n                            \"lessThan\": \"fd3a3f28ed60c6af4b2a39933b151d6b27842c3b\",\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                        \"net/mac802154/llsec.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"3.16\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"3.16\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.148\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.101\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.42\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.6\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/f27ce82eb04960465df71634b196a48a4ecafd50","https://git.kernel.org/stable/c/2d6b42a61373144298070668fddf06efe79cf2ff","https://git.kernel.org/stable/c/ec7e62d77193131227df49d654d118fdf5a59892","https://git.kernel.org/stable/c/5bbf0cd9b6a7076af86c75e87e180099be2e11ae","https://git.kernel.org/stable/c/de80808f37d99c6dc67bb6f97eea00c8f57a8821","https://git.kernel.org/stable/c/f20dedce0429b293d4bad604e0d3f65d8ac96c83","https://git.kernel.org/stable/c/e09e0301d616c1ef38a5e64e8e4326fd39df13cc","https://git.kernel.org/stable/c/fd3a3f28ed60c6af4b2a39933b151d6b27842c3b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-68125","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-68125","identifiers":["CVE-2026-68125"]},"retained":false,"historicalAffected":[]}],"coverage":[]}