{"api_version":"1","generated_at":"2026-08-12T05:12:59+00:00","cve":"CVE-2026-68125","urls":{"html":"https://cve.report/CVE-2026-68125","api":"https://cve.report/api/cve/CVE-2026-68125.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-68125","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-68125"},"summary":{"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":"PUBLISHED","assigner":"Linux","published_at":"2026-08-10 13:19:57","updated_at":"2026-08-10 13:19:57"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/e09e0301d616c1ef38a5e64e8e4326fd39df13cc","name":"https://git.kernel.org/stable/c/e09e0301d616c1ef38a5e64e8e4326fd39df13cc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/de80808f37d99c6dc67bb6f97eea00c8f57a8821","name":"https://git.kernel.org/stable/c/de80808f37d99c6dc67bb6f97eea00c8f57a8821","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f20dedce0429b293d4bad604e0d3f65d8ac96c83","name":"https://git.kernel.org/stable/c/f20dedce0429b293d4bad604e0d3f65d8ac96c83","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/fd3a3f28ed60c6af4b2a39933b151d6b27842c3b","name":"https://git.kernel.org/stable/c/fd3a3f28ed60c6af4b2a39933b151d6b27842c3b","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/5bbf0cd9b6a7076af86c75e87e180099be2e11ae","name":"https://git.kernel.org/stable/c/5bbf0cd9b6a7076af86c75e87e180099be2e11ae","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-68125","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-68125","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4c14a2fb5d143e4ed94143be2b8c1961b47df9af 5bbf0cd9b6a7076af86c75e87e180099be2e11ae git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4c14a2fb5d143e4ed94143be2b8c1961b47df9af de80808f37d99c6dc67bb6f97eea00c8f57a8821 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4c14a2fb5d143e4ed94143be2b8c1961b47df9af f20dedce0429b293d4bad604e0d3f65d8ac96c83 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4c14a2fb5d143e4ed94143be2b8c1961b47df9af e09e0301d616c1ef38a5e64e8e4326fd39df13cc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4c14a2fb5d143e4ed94143be2b8c1961b47df9af fd3a3f28ed60c6af4b2a39933b151d6b27842c3b git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 3.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.148 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.101 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.42 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1.6 7.1.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2-rc5 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/mac802154/llsec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"5bbf0cd9b6a7076af86c75e87e180099be2e11ae","status":"affected","version":"4c14a2fb5d143e4ed94143be2b8c1961b47df9af","versionType":"git"},{"lessThan":"de80808f37d99c6dc67bb6f97eea00c8f57a8821","status":"affected","version":"4c14a2fb5d143e4ed94143be2b8c1961b47df9af","versionType":"git"},{"lessThan":"f20dedce0429b293d4bad604e0d3f65d8ac96c83","status":"affected","version":"4c14a2fb5d143e4ed94143be2b8c1961b47df9af","versionType":"git"},{"lessThan":"e09e0301d616c1ef38a5e64e8e4326fd39df13cc","status":"affected","version":"4c14a2fb5d143e4ed94143be2b8c1961b47df9af","versionType":"git"},{"lessThan":"fd3a3f28ed60c6af4b2a39933b151d6b27842c3b","status":"affected","version":"4c14a2fb5d143e4ed94143be2b8c1961b47df9af","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/mac802154/llsec.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"3.16"},{"lessThan":"3.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.148","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.101","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.42","versionType":"semver"},{"lessThanOrEqual":"7.1.*","status":"unaffected","version":"7.1.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.2-rc5","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.148","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.101","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.42","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1.6","versionStartIncluding":"3.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2-rc5","versionStartIncluding":"3.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"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."}],"providerMetadata":{"dateUpdated":"2026-08-10T11:58:46.198Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/5bbf0cd9b6a7076af86c75e87e180099be2e11ae"},{"url":"https://git.kernel.org/stable/c/de80808f37d99c6dc67bb6f97eea00c8f57a8821"},{"url":"https://git.kernel.org/stable/c/f20dedce0429b293d4bad604e0d3f65d8ac96c83"},{"url":"https://git.kernel.org/stable/c/e09e0301d616c1ef38a5e64e8e4326fd39df13cc"},{"url":"https://git.kernel.org/stable/c/fd3a3f28ed60c6af4b2a39933b151d6b27842c3b"}],"title":"mac802154: llsec: reject frames shorter than the authentication tag","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-68125","datePublished":"2026-08-10T11:58:46.198Z","dateReserved":"2026-07-30T09:28:09.369Z","dateUpdated":"2026-08-10T11:58:46.198Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-10 13:19:57","lastModifiedDate":"2026-08-10 13:19:57","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"68125","Ordinal":"1","Title":"mac802154: llsec: reject frames shorter than the authentication ","CVE":"CVE-2026-68125","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"68125","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"mac802154: llsec: reject frames shorter than the authentication "}]}}}