{"id":"CVE-2026-74557","revision":"e73cc9ce9328402a8f1b2392bbc10d25","records":[{"revision":"e73cc9ce9328402a8f1b2392bbc10d25","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-74557","aliases":[],"title":"scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libiscsi: Fix stale-data leak into the SCSI sense buffer\n\niscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the\ntarget-supplied data segment.  The segment carries a 2-byte sense length\nfollowed by the sense bytes, so it must hold 2 + senselen bytes, but the\nbounds check only requires datalen >= senselen:\n\n\tsenselen = get_unaligned_be16(data);\n\tif (datalen < senselen)\n\t\tgoto invalid_datalen;\n\tmemcpy(sc->sense_buffer, data + 2,\n\t       min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE));\n\nA target that returns a SCSI Response whose datalen equals senselen\n(with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data +\n2 read up to two bytes past the received data.  Those bytes are stale\nconn->data contents and end up in the command's sense buffer, which is\nreturned to userspace.\n\nAccount for the 2-byte sense length prefix in the check.","state":0,"publishedAt":"2026-08-15T12:28:01.988+00:00","modifiedAt":"2026-10-16T19:05:55.724+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                        \"drivers/scsi/libiscsi.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"812f1ae95b22419422972748f173b0916ee4d621\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"fef6167e8149896cd81bea333fd51b1c91239149\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"baa04572673125e4d5bc309b4077d1cb46cc78d1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"7567f06abdefb1caf2d836107c4d08c5185c650e\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"60499924faf4ef97e84228c20515218ef121facf\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"3ef209ca0b4b68c75e9a814d90cc916026b5a6ac\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"1f07a897d43c63e6c9458bf77450defef39b5833\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"7996a778ff8c717cb1a7a294475c59cc8f1e9fb8\",\n                            \"lessThan\": \"98b87885de4b7f605533a2860685f5689fce8e82\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\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                        \"drivers/scsi/libiscsi.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"2.6.18\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"2.6.18\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.10.265\",\n                            \"lessThanOrEqual\": \"5.10.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"5.15.216\",\n                            \"lessThanOrEqual\": \"5.15.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.1.183\",\n                            \"lessThanOrEqual\": \"6.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.151\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.103\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.44\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.1.8\",\n                            \"lessThanOrEqual\": \"7.1.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/812f1ae95b22419422972748f173b0916ee4d621","https://git.kernel.org/stable/c/fef6167e8149896cd81bea333fd51b1c91239149","https://git.kernel.org/stable/c/baa04572673125e4d5bc309b4077d1cb46cc78d1","https://git.kernel.org/stable/c/7567f06abdefb1caf2d836107c4d08c5185c650e","https://git.kernel.org/stable/c/60499924faf4ef97e84228c20515218ef121facf","https://git.kernel.org/stable/c/3ef209ca0b4b68c75e9a814d90cc916026b5a6ac","https://git.kernel.org/stable/c/1f07a897d43c63e6c9458bf77450defef39b5833","https://git.kernel.org/stable/c/98b87885de4b7f605533a2860685f5689fce8e82"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74557","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74557","identifiers":["CVE-2026-74557"]},"retained":false,"historicalAffected":[]}],"coverage":[]}