{"id":"CVE-2026-97529","state":"PUBLISHED","title":"scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]\n\nThe FC BSG transport allocates job->request via memdup_user() using the\nexact user-supplied request_len. For FC_BSG_HST_VENDOR,\nfc_bsg_host_dispatch() only guarantees request_len covers msgcode and\nvendor_id; it does not account for the vendor_cmd[] flexible array.\n\nqla2xxx then reads the command selector vendor_cmd[0] and, in several\nsub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor\ncommand area without verifying request_len. A caller holding\nCAP_SYS_RAWIO can submit a short request whose vendor_id matches the\nhost, triggering out-of-bounds heap reads (KASAN-detectable, and able to\nmis-select a command or panic).\n\nAdd a central guard in qla2x00_process_vendor_specific() so the selector\nis always in bounds, restrict the early vendor_cmd[0] read in\nqla24xx_bsg_request() to sufficiently long vendor messages, and add\nrequest_len checks to the sub-handlers that read further:\nqla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(),\nqla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(),\nqla2x00_update_optrom(), qlafx00_mgmt_cmd() and\nqla28xx_validate_flash_image().","publishedAt":"2026-09-25T10:21:30.733Z","updatedAt":"2026-10-30T12:37:10.411Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"a0c6842ec825a91693626dbd9a4c54f2b9dc15ea","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"0540676f5fefdff748b8d57a927b143e31dc21fd","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"d3762cc777544a4cbc4635a787e1cfc021e1a615","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"5f33efe04658968b6b3f432f904d5f1f74c12286","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"ef63922d8bdea03de1804af39a6b12212acb1be2","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"740f3458a4798af54aaf8cf63e797d407e8b6d3b","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"f75bff451a2fac5aed82f9641df1e9a42c5a899d","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"4cf38dd9465736141263ebb63375868311a0ec81","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_bsg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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":["drivers/scsi/qla2xxx/qla_bsg.c"]}],"references":["https://git.kernel.org/stable/c/a0c6842ec825a91693626dbd9a4c54f2b9dc15ea","https://git.kernel.org/stable/c/0540676f5fefdff748b8d57a927b143e31dc21fd","https://git.kernel.org/stable/c/d3762cc777544a4cbc4635a787e1cfc021e1a615","https://git.kernel.org/stable/c/5f33efe04658968b6b3f432f904d5f1f74c12286","https://git.kernel.org/stable/c/ef63922d8bdea03de1804af39a6b12212acb1be2","https://git.kernel.org/stable/c/740f3458a4798af54aaf8cf63e797d407e8b6d3b","https://git.kernel.org/stable/c/f75bff451a2fac5aed82f9641df1e9a42c5a899d","https://git.kernel.org/stable/c/4cf38dd9465736141263ebb63375868311a0ec81"],"weaknesses":[],"ingestedAt":"2026-10-30T12:56:04.490Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/97xxx/CVE-2026-97529.json","commit":"1f312381e38164a43607eebab851b151dd16861e","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-97529","state":"PUBLISHED","datePublished":"2026-09-25T10:21:30.733Z","dateUpdated":"2026-10-30T12:37:10.411Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-24T16:01:01.153Z"},"containers":{"cna":{"title":"scsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Validate BSG request_len before reading vendor_cmd[]\n\nThe FC BSG transport allocates job->request via memdup_user() using the\nexact user-supplied request_len. For FC_BSG_HST_VENDOR,\nfc_bsg_host_dispatch() only guarantees request_len covers msgcode and\nvendor_id; it does not account for the vendor_cmd[] flexible array.\n\nqla2xxx then reads the command selector vendor_cmd[0] and, in several\nsub-handlers, vendor_cmd[1]/[2] or structures overlaid on the vendor\ncommand area without verifying request_len. A caller holding\nCAP_SYS_RAWIO can submit a short request whose vendor_id matches the\nhost, triggering out-of-bounds heap reads (KASAN-detectable, and able to\nmis-select a command or panic).\n\nAdd a central guard in qla2x00_process_vendor_specific() so the selector\nis always in bounds, restrict the early vendor_cmd[0] read in\nqla24xx_bsg_request() to sufficiently long vendor messages, and add\nrequest_len checks to the sub-handlers that read further:\nqla24xx_proc_fcp_prio_cfg_cmd(), qla2x00_process_loopback(),\nqla84xx_reset(), qla84xx_updatefw(), qla2x00_read_optrom(),\nqla2x00_update_optrom(), qlafx00_mgmt_cmd() and\nqla28xx_validate_flash_image()."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"a0c6842ec825a91693626dbd9a4c54f2b9dc15ea","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"0540676f5fefdff748b8d57a927b143e31dc21fd","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"d3762cc777544a4cbc4635a787e1cfc021e1a615","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"5f33efe04658968b6b3f432f904d5f1f74c12286","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"ef63922d8bdea03de1804af39a6b12212acb1be2","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"740f3458a4798af54aaf8cf63e797d407e8b6d3b","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"f75bff451a2fac5aed82f9641df1e9a42c5a899d","versionType":"git"},{"version":"01e0e15c8b3b32e006e5cccac10c8b377ac3d803","status":"affected","lessThan":"4cf38dd9465736141263ebb63375868311a0ec81","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/scsi/qla2xxx/qla_bsg.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.10","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.10","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.112","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.7","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":["drivers/scsi/qla2xxx/qla_bsg.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/a0c6842ec825a91693626dbd9a4c54f2b9dc15ea"},{"url":"https://git.kernel.org/stable/c/0540676f5fefdff748b8d57a927b143e31dc21fd"},{"url":"https://git.kernel.org/stable/c/d3762cc777544a4cbc4635a787e1cfc021e1a615"},{"url":"https://git.kernel.org/stable/c/5f33efe04658968b6b3f432f904d5f1f74c12286"},{"url":"https://git.kernel.org/stable/c/ef63922d8bdea03de1804af39a6b12212acb1be2"},{"url":"https://git.kernel.org/stable/c/740f3458a4798af54aaf8cf63e797d407e8b6d3b"},{"url":"https://git.kernel.org/stable/c/f75bff451a2fac5aed82f9641df1e9a42c5a899d"},{"url":"https://git.kernel.org/stable/c/4cf38dd9465736141263ebb63375868311a0ec81"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:37:10.411Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.2.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.10","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}