{"apiVersion":"1.0","identifier":"CVE-2026-74557","description":"In the Linux kernel, the following vulnerability has been resolved: scsi: libiscsi: Fix stale-data leak into the SCSI sense buffer iscsi_scsi_cmd_rsp() copies the sense data of a SCSI Response from the target-supplied data segment. The segment carries a 2-byte sense length followed by the sense bytes, so it must hold 2 + senselen bytes, but the bounds check only requires datalen >= senselen: senselen = get_unaligned_be16(data); if (datalen < senselen) goto invalid_datalen; memcpy(sc->sense_buffer, data + 2, min_t(uint16_t, senselen, SCSI_SENSE_BUFFERSIZE)); A target that returns a SCSI Response whose datalen equals senselen (with senselen <= SCSI_SENSE_BUFFERSIZE) makes the memcpy() from data + 2 read up to two bytes past the received data. Those bytes are stale conn->data contents and end up in the command-s sense buffer, which is returned to userspace. Account for the 2-byte sense length prefix in the check.","publishedAt":"2026-08-15T13:18:01","lastModifiedAt":"2026-08-19T17:21:10","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74557","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","epssProbability":0.00329,"riskScore":0.77,"affectedProduct":"linux","affectedVersions":"unknown","vulnerabilityType":"Kernel","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74557","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74557","en":"https://www.redsauce.net/en/cves/CVE-2026-74557","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74557","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74557","de":"https://www.redsauce.net/de/cves/CVE-2026-74557","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74557","el":"https://www.redsauce.net/el/cves/CVE-2026-74557"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74557"}}