{"id":"CVE-2026-23060","title":"crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec\n\nauthencesn assumes an ESP/ESN-formatted AAD. When assoclen is shorter than\nthe minimum exp…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < df22c9a65e9a9daa368a72fed596af9d7d5876bb","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < fee86edf5803f1d1f19e3b4f2dacac241bddfa48","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 767e8349f7e929b7dd95c08f0b4cb353459b365e","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < b0a9609283a5c852addb513dafa655c61eebc1ef","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 161bdc90fce25bd9890adc67fa1c8563a7acbf40","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 9532ff0d0e90ff78a214299f594ab9bac81defe4","Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 2397e9264676be7794f8f7f1e9763d90bd3c7335","Linux 4.3"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-10T20:40:49.111568Z"},"published":"2026-02-04","updated":"2026-09-08","sourceUpdated":"2026-09-08T08:44:45.237Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-23060","references":[{"url":"https://git.kernel.org/stable/c/df22c9a65e9a9daa368a72fed596af9d7d5876bb"},{"url":"https://git.kernel.org/stable/c/fee86edf5803f1d1f19e3b4f2dacac241bddfa48"},{"url":"https://git.kernel.org/stable/c/767e8349f7e929b7dd95c08f0b4cb353459b365e"},{"url":"https://git.kernel.org/stable/c/b0a9609283a5c852addb513dafa655c61eebc1ef"},{"url":"https://git.kernel.org/stable/c/161bdc90fce25bd9890adc67fa1c8563a7acbf40"},{"url":"https://git.kernel.org/stable/c/9532ff0d0e90ff78a214299f594ab9bac81defe4"},{"url":"https://git.kernel.org/stable/c/2397e9264676be7794f8f7f1e9763d90bd3c7335"}],"tags":["cve.org"],"epss":0.00131,"epssPercentile":0.03043,"ingestedAt":"2026-09-08T15:33:26.994Z","slug":"CVE-2026-23060","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ncrypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec\n\nauthencesn assumes an ESP/ESN-formatted AAD. When assoclen is shorter than\nthe minimum expected length, crypto_authenc_esn_decrypt() can advance past\nthe end of the destination scatterlist and trigger a NULL pointer dereference\nin scatterwalk_map_and_copy(), leading to a kernel panic (DoS).\n\nAdd a minimum AAD length check to fail fast on invalid inputs.\n\n## Affected\n\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < df22c9a65e9a9daa368a72fed596af9d7d5876bb`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < fee86edf5803f1d1f19e3b4f2dacac241bddfa48`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 767e8349f7e929b7dd95c08f0b4cb353459b365e`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < b0a9609283a5c852addb513dafa655c61eebc1ef`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 161bdc90fce25bd9890adc67fa1c8563a7acbf40`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 9532ff0d0e90ff78a214299f594ab9bac81defe4`\n- `Linux >= 104880a6b470958ddc30e139c41aa4f6ed3a5234 < 2397e9264676be7794f8f7f1e9763d90bd3c7335`\n- `Linux 4.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}