{"id":"CVE-2026-99157","title":"scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies\n\nbsg-lib allocates a 96-byte (SCSI_SENSE_BUFFERSIZE) reply buffer per\njob, but struct ufs_rpmb_r…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < 2effbe746452c108188f85a6951f2b0b65653840","Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < 7a755f6d47b811d3abd93c1642ce5e63894540b8","Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < ec6b083915e8146e147314a5f4f1285d07b57bfc","Linux 6.3"],"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T10:35:11.192Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-99157","references":[{"url":"https://git.kernel.org/stable/c/2effbe746452c108188f85a6951f2b0b65653840"},{"url":"https://git.kernel.org/stable/c/7a755f6d47b811d3abd93c1642ce5e63894540b8"},{"url":"https://git.kernel.org/stable/c/ec6b083915e8146e147314a5f4f1285d07b57bfc"}],"tags":["cve.org"],"ingestedAt":"2026-10-28T11:09:40.414Z","slug":"CVE-2026-99157","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nscsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies\n\nbsg-lib allocates a 96-byte (SCSI_SENSE_BUFFERSIZE) reply buffer per\njob, but struct ufs_rpmb_reply is 104 bytes: a 40-byte struct\nufs_bsg_reply followed by a 64-byte EHS. When an Advanced RPMB command\nreturns an EHS, ufshcd_advanced_rpmb_req_handler() copies it right after\nthe 40-byte header and writes 8 bytes past the end of the buffer.\n\nLet each BSG transport pass its reply buffer size to bsg_setup_queue()\nand have ufs_bsg request sizeof(struct ufs_rpmb_reply), so the full\nreply reaches user space. Other transports keep SCSI_SENSE_BUFFERSIZE.\n\n## Affected\n\n- `Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < 2effbe746452c108188f85a6951f2b0b65653840`\n- `Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < 7a755f6d47b811d3abd93c1642ce5e63894540b8`\n- `Linux >= 6ff265fc5ef660499e0edc4641647e99eed3f519 < ec6b083915e8146e147314a5f4f1285d07b57bfc`\n- `Linux 6.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}