{"id":"CVE-2026-90327","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with p…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with p…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < 6054fed6bad08b6d03973e8ffca7f0c9394d1c30","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < eac733a0b6fe0a52d91f9f623425735ed50ac6c2","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < 95e0ed2439dd1792eb454c68ae8d10f30ffe3bff","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < 056eea1a2068ad2fb7c3093c5f1095268f87d0c7","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < 1bf499e438da80455e258049bce60ffb3a53f3fa","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < c4487e4d5309de587479ecc2f5173b49586f46f4","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < f97022fefe6eb06ee18549d603420440f2959802","Linux >= 02a47617cdce440f60c71a51f3a93f9f5fcc5a7a < 77e5eb0e192aec6710c03ca8144582fd2af36ca4","Linux 2.6.28"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:17:30.800","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90327","references":[{"url":"https://git.kernel.org/stable/c/056eea1a2068ad2fb7c3093c5f1095268f87d0c7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/1bf499e438da80455e258049bce60ffb3a53f3fa","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/6054fed6bad08b6d03973e8ffca7f0c9394d1c30","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/77e5eb0e192aec6710c03ca8144582fd2af36ca4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/95e0ed2439dd1792eb454c68ae8d10f30ffe3bff","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/c4487e4d5309de587479ecc2f5173b49586f46f4","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/eac733a0b6fe0a52d91f9f623425735ed50ac6c2","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f97022fefe6eb06ee18549d603420440f2959802","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.821Z","epss":0.00211,"epssPercentile":0.11616,"slug":"CVE-2026-90327","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nphonet: pep: do not write beyond optlen in getsockopt\n\npep_getsockopt() clamps the reported length to the caller's buffer with\nmin_t(), but then stores the value with put_user(val, (int __user *)\noptval), which always writes sizeof(int) bytes. A getsockopt() call with\nan optlen smaller than sizeof(int) thus reports the clamped length yet\nwrites a full int, one to three bytes past the user buffer.\n\nWrite the value with copy_to_user() bounded by len, so at most optlen\nbytes are copied, matching the length reported back to userspace.\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":[]}