{"id":"CVE-2026-99157","state":"PUBLISHED","title":"scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies","description":"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_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.","publishedAt":"2026-10-28T10:35:11.192Z","updatedAt":"2026-10-30T12:42:23.683Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"913a1876fbe9a168030013b9e6cb2746fe41fff4","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"bfb0582708b3432919a8baaa3a65de5fdb1490ea","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"2effbe746452c108188f85a6951f2b0b65653840","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"7a755f6d47b811d3abd93c1642ce5e63894540b8","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"ec6b083915e8146e147314a5f4f1285d07b57bfc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/bsg-lib.c","drivers/scsi/mpi3mr/mpi3mr_app.c","drivers/scsi/scsi_transport_fc.c","drivers/scsi/scsi_transport_iscsi.c","drivers/scsi/scsi_transport_sas.c","drivers/ufs/core/ufs_bsg.c","include/linux/bsg-lib.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.6.161","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.115","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/bsg-lib.c","drivers/scsi/mpi3mr/mpi3mr_app.c","drivers/scsi/scsi_transport_fc.c","drivers/scsi/scsi_transport_iscsi.c","drivers/scsi/scsi_transport_sas.c","drivers/ufs/core/ufs_bsg.c","include/linux/bsg-lib.h"]}],"references":["https://git.kernel.org/stable/c/913a1876fbe9a168030013b9e6cb2746fe41fff4","https://git.kernel.org/stable/c/bfb0582708b3432919a8baaa3a65de5fdb1490ea","https://git.kernel.org/stable/c/2effbe746452c108188f85a6951f2b0b65653840","https://git.kernel.org/stable/c/7a755f6d47b811d3abd93c1642ce5e63894540b8","https://git.kernel.org/stable/c/ec6b083915e8146e147314a5f4f1285d07b57bfc"],"weaknesses":[],"ingestedAt":"2026-10-30T13:02:04.640Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/99xxx/CVE-2026-99157.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99157","state":"PUBLISHED","datePublished":"2026-10-28T10:35:11.192Z","dateUpdated":"2026-10-30T12:42:23.683Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.397Z"},"containers":{"cna":{"title":"scsi: bsg: Pass reply_len to bsg_setup_queue() to fit UFS ARPMB replies","descriptions":[{"lang":"en","value":"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_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."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"913a1876fbe9a168030013b9e6cb2746fe41fff4","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"bfb0582708b3432919a8baaa3a65de5fdb1490ea","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"2effbe746452c108188f85a6951f2b0b65653840","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"7a755f6d47b811d3abd93c1642ce5e63894540b8","versionType":"git"},{"version":"6ff265fc5ef660499e0edc4641647e99eed3f519","status":"affected","lessThan":"ec6b083915e8146e147314a5f4f1285d07b57bfc","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/bsg-lib.c","drivers/scsi/mpi3mr/mpi3mr_app.c","drivers/scsi/scsi_transport_fc.c","drivers/scsi/scsi_transport_iscsi.c","drivers/scsi/scsi_transport_sas.c","drivers/ufs/core/ufs_bsg.c","include/linux/bsg-lib.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.3","versionType":"semver"},{"version":"6.6.161","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.115","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.59","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.13","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/bsg-lib.c","drivers/scsi/mpi3mr/mpi3mr_app.c","drivers/scsi/scsi_transport_fc.c","drivers/scsi/scsi_transport_iscsi.c","drivers/scsi/scsi_transport_sas.c","drivers/ufs/core/ufs_bsg.c","include/linux/bsg-lib.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/913a1876fbe9a168030013b9e6cb2746fe41fff4"},{"url":"https://git.kernel.org/stable/c/bfb0582708b3432919a8baaa3a65de5fdb1490ea"},{"url":"https://git.kernel.org/stable/c/2effbe746452c108188f85a6951f2b0b65653840"},{"url":"https://git.kernel.org/stable/c/7a755f6d47b811d3abd93c1642ce5e63894540b8"},{"url":"https://git.kernel.org/stable/c/ec6b083915e8146e147314a5f4f1285d07b57bfc"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:42:23.683Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.6.161"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.12.115"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"6.18.59"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"7.2.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.3","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}