{"id":"CVE-2026-98405","revision":"4aa113261a4441729ae6e5f1f54490ce","records":[{"revision":"4aa113261a4441729ae6e5f1f54490ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-98405","aliases":[],"title":"smb: client: fix missing iov bounds check in parse_posix_sids()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix missing iov bounds check in parse_posix_sids()\n\nIn parse_posix_sids(), sidsbuf_end is calculated using the server-supplied\nout_len without being validated against the actual length of the received\niov (iov_len).\n\nIf a server provides an inflated out_len, sidsbuf_end will point past the\nend of the iov. This defeats the bounds guards in posix_info_sid_size(),\nallowing out-of-bounds reads into adjacent kernel memory.\n\nFix this by rejecting responses where the calculated sidsbuf_end would\nexceed the received iov boundaries or cause pointer wraparound.","state":0,"publishedAt":"2026-10-14T13:27:40.589+00:00","modifiedAt":"2026-10-19T13:42:20.296+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/smb/client/smb2inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"a90f37e3d7acfd9824f162830583bbf7846fe252\",\n                            \"lessThan\": \"d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"858e74876c5cbff1dfd5bace99e32fbce2abd4b5\",\n                            \"lessThan\": \"b862996e5105be1293da9cdc85da77b76021c3bd\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"858e74876c5cbff1dfd5bace99e32fbce2abd4b5\",\n                            \"lessThan\": \"2f8ed71aaaba3bc8b19cd9930cc62e63e142b299\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"858e74876c5cbff1dfd5bace99e32fbce2abd4b5\",\n                            \"lessThan\": \"eac6917a42899aad0617bbf04798c5dd946a1fe5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"858e74876c5cbff1dfd5bace99e32fbce2abd4b5\",\n                            \"lessThan\": \"b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"6.6.32\",\n                            \"lessThan\": \"6.6.158\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"fs/smb/client/smb2inode.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.8\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.8\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.158\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.112\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.54\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.8\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644","https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd","https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299","https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5","https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-98405","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-98405","identifiers":["CVE-2026-98405"]},"retained":false,"historicalAffected":[]}],"coverage":[]}