{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98405", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.347Z", "datePublished": "2026-10-14T13:27:40.589Z", "dateUpdated": "2026-10-14T13:27:40.589Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-14T13:27:40.589Z"}, "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2inode.c"], "versions": [{"version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "lessThan": "d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644", "status": "affected", "versionType": "git"}, {"version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "lessThan": "b862996e5105be1293da9cdc85da77b76021c3bd", "status": "affected", "versionType": "git"}, {"version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "lessThan": "2f8ed71aaaba3bc8b19cd9930cc62e63e142b299", "status": "affected", "versionType": "git"}, {"version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "lessThan": "eac6917a42899aad0617bbf04798c5dd946a1fe5", "status": "affected", "versionType": "git"}, {"version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "lessThan": "b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/smb/client/smb2inode.c"], "versions": [{"version": "6.6.32", "lessThan": "6.6.158", "status": "affected", "versionType": "semver"}, {"version": "6.6.32", "lessThan": "6.12.112", "status": "affected", "versionType": "semver"}, {"version": "6.6.32", "lessThan": "6.18.54", "status": "affected", "versionType": "semver"}, {"version": "6.6.32", "lessThan": "7.2.8", "status": "affected", "versionType": "semver"}, {"version": "6.6.32", "lessThan": "7.3-rc4", "status": "affected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.32", "versionEndExcluding": "6.6.158"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.32", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.32", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.32", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.6.32", "versionEndExcluding": "7.3-rc4"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644"}, {"url": "https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd"}, {"url": "https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299"}, {"url": "https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5"}, {"url": "https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc"}], "title": "smb: client: fix missing iov bounds check in parse_posix_sids()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/smb2inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644", "status": "affected", "version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "versionType": "git"}, {"lessThan": "b862996e5105be1293da9cdc85da77b76021c3bd", "status": "affected", "version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "versionType": "git"}, {"lessThan": "2f8ed71aaaba3bc8b19cd9930cc62e63e142b299", "status": "affected", "version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "versionType": "git"}, {"lessThan": "eac6917a42899aad0617bbf04798c5dd946a1fe5", "status": "affected", "version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "versionType": "git"}, {"lessThan": "b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc", "status": "affected", "version": "a90f37e3d7acfd9824f162830583bbf7846fe252", "versionType": "git"}]}, {"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/smb/client/smb2inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6.6.158", "status": "affected", "version": "6.6.32", "versionType": "semver"}, {"lessThan": "6.12.112", "status": "affected", "version": "6.6.32", "versionType": "semver"}, {"lessThan": "6.18.54", "status": "affected", "version": "6.6.32", "versionType": "semver"}, {"lessThan": "7.2.8", "status": "affected", "version": "6.6.32", "versionType": "semver"}, {"lessThan": "7.3-rc4", "status": "affected", "version": "6.6.32", "versionType": "semver"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-98405", "lastModified": "2026-10-14T14:17:51.603", "metrics": {}, "published": "2026-10-14T14:17:51.603", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"created": "2026-10-15T05:15:14.984289+00:00", "updated": "2026-10-15T05:15:14.984294+00:00", "vendors": [], "weaknesses": ["CWE-788", "CWE-119"]}