{"id":"CVE-2025-21711","title":"net/rose: prevent integer overflows in rose_setsockopt()","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rose: prevent integer overflows in rose_setsockopt()\n\nIn case of possible unpredictably large arguments passed to\nrose_setsockopt() and multiplied by extra values o…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4bdd449977e2364a53d0b2a5427e71beb1cd702d","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b8583b54455cbec2fc038fa32b6700890b369815","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9bdee49ad6bbd26ab5e13cc6731e54fb1b6c1dca","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 352daa50946c3bbb662432e8daf54d6760796589","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d08f4074f9c69f7e95502587eb1b258a965ba7f0","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e5338930a29d0ab2a5af402f5f664aeba0d1a676","Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d640627663bfe7d8963c7615316d7d4ef60f3b0b","Linux 2.6.12"],"published":"2025-02-27","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:03:34.288Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-21711","references":[{"url":"https://git.kernel.org/stable/c/4bdd449977e2364a53d0b2a5427e71beb1cd702d"},{"url":"https://git.kernel.org/stable/c/b8583b54455cbec2fc038fa32b6700890b369815"},{"url":"https://git.kernel.org/stable/c/9bdee49ad6bbd26ab5e13cc6731e54fb1b6c1dca"},{"url":"https://git.kernel.org/stable/c/352daa50946c3bbb662432e8daf54d6760796589"},{"url":"https://git.kernel.org/stable/c/d08f4074f9c69f7e95502587eb1b258a965ba7f0"},{"url":"https://git.kernel.org/stable/c/e5338930a29d0ab2a5af402f5f664aeba0d1a676"},{"url":"https://git.kernel.org/stable/c/d640627663bfe7d8963c7615316d7d4ef60f3b0b"}],"tags":["cve.org"],"epss":0.00227,"epssPercentile":0.1336,"ingestedAt":"2026-10-15T04:46:37.356Z","slug":"CVE-2025-21711","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nnet/rose: prevent integer overflows in rose_setsockopt()\n\nIn case of possible unpredictably large arguments passed to\nrose_setsockopt() and multiplied by extra values on top of that,\ninteger overflows may occur.\n\nDo the safest minimum and fix these issues by checking the\ncontents of 'opt' and returning -EINVAL if they are too large. Also,\nswitch to unsigned int and remove useless check for negative 'opt'\nin ROSE_IDLE case.\n\n## Affected\n\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 4bdd449977e2364a53d0b2a5427e71beb1cd702d`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < b8583b54455cbec2fc038fa32b6700890b369815`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9bdee49ad6bbd26ab5e13cc6731e54fb1b6c1dca`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 352daa50946c3bbb662432e8daf54d6760796589`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d08f4074f9c69f7e95502587eb1b258a965ba7f0`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e5338930a29d0ab2a5af402f5f664aeba0d1a676`\n- `Linux >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d640627663bfe7d8963c7615316d7d4ef60f3b0b`\n- `Linux 2.6.12`\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":[]}