{"cve":"CVE-2026-46155","nvd":{"published":"2026-05-28T10:16:31.133","modified":"2026-10-19T20:18:35.750","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/client: fix out-of-bounds read in smb2_compound_op()\n\nIf a server sends a truncated response but a large OutputBufferLength, and\nterminates the EA list early, check_wsl_eas() returns success without\nvalidating that the entire OutputBufferLength fits within iov_len.\n\nThen smb2_compound_op() does:\n    memcpy(idata->wsl.eas, data[0], size[0]);\n\nWhere size[0] is OutputBufferLength. If iov_len is smaller than size[0],\nmemcpy can read beyond the end of the rsp_iov allocation and leak adjacent\nkernel heap memory.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","score":9.1},"cwes":["CWE-125"],"references":["https://git.kernel.org/stable/c/512d33bc8ea4ea5c19728ee118715f4b1f4d1926","https://git.kernel.org/stable/c/8d09328dfda089675e4c049f3f256064a1d1996b","https://git.kernel.org/stable/c/9b3af35645ff9cd334edc130249f9a2fb2bea25f","https://git.kernel.org/stable/c/a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c","https://git.kernel.org/stable/c/dffb44b2e06a2908e249f0f93156fc987eee1d1c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2026-46155","score":0.00478,"percentile":0.40932,"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."]}