{"cve":"CVE-2026-46234","nvd":{"published":"2026-05-28T10:16:39.043","modified":"2026-10-15T02:19:50.947","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvsock: fix buffer size clamping order\n\nIn vsock_update_buffer_size(), the buffer size was being clamped to the\nmaximum first, and then to the minimum. If a user sets a minimum buffer\nsize larger than the maximum, the minimum check overrides the maximum\ncheck, inverting the constraint.\n\nThis breaks the intended socket memory boundaries by allowing the\nvsk->buffer_size to grow beyond the configured vsk->buffer_max_size.\n\nFix this by checking the minimum first, and then the maximum. This\nensures the buffer size never exceeds the buffer_max_size.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-787"],"references":["https://git.kernel.org/stable/c/01ef69785dc3162f588a361ab770b1e312800188","https://git.kernel.org/stable/c/0b68881501460c3761f196469e1e503218c5e536","https://git.kernel.org/stable/c/2602f7bb5818e92315feeaeb71d8ce4d5c9ab160","https://git.kernel.org/stable/c/310da27932dd0afe7ce7456dfe1f0814c3301f41","https://git.kernel.org/stable/c/a998a7e250bf976539e05a00ec64a81292afecaa"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-46234","score":0.00131,"percentile":0.02703,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}