{ "schemaVersion": 1, "attribution": [ { "source": "CISA Known Exploited Vulnerabilities", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog", "licence": "US government work" }, { "source": "GitHub Advisory Database", "url": "https://github.com/advisories", "licence": "CC BY 4.0" }, { "source": "Have I Been Pwned", "url": "https://haveibeenpwned.com/", "licence": "CC BY 4.0" }, { "source": "CVE Program (CVE records)", "url": "https://www.cve.org/Legal/TermsOfUse", "licence": "CVE Terms of Use", "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.", "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." }, { "source": "FIRST EPSS", "url": "https://www.first.org/epss/", "licence": "free to use; FIRST requests attribution" } ], "record": { "id": "CVE-2021-47576", "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-47576", "idYear": 2021, "status": "PUBLISHED", "publishedAt": "2024-06-19T14:53:44.725Z", "updatedAt": "2026-08-05T08:48:26.375Z", "importedAt": "2026-10-24T01:56:36.661Z", "snapshot": { "id": "cve_2026-10-24_midnight_baseline", "at": "2026-10-24T00:00:00.000Z", "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z" }, "facts": { "title": "scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()", "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()\n\nIn resp_mode_select() sanity check the block descriptor len to avoid UAF.\n\nBUG: KASAN: use-after-free in resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\nRead of size 1 at addr ffff888026670f50 by task scsicmd/15032\n\nCPU: 1 PID: 15032 Comm: scsicmd Not tainted 5.15.0-01d0625 #15\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nCall Trace:\n \n dump_stack_lvl+0x89/0xb5 lib/dump_stack.c:107\n print_address_description.constprop.9+0x28/0x160 mm/kasan/report.c:257\n kasan_report.cold.14+0x7d/0x117 mm/kasan/report.c:443\n __asan_report_load1_noabort+0x14/0x20 mm/kasan/report_generic.c:306\n resp_mode_select+0xa4c/0xb40 drivers/scsi/scsi_debug.c:2509\n schedule_resp+0x4af/0x1a10 drivers/scsi/scsi_debug.c:5483\n scsi_debug_queuecommand+0x8c9/0x1e70 drivers/scsi/scsi_debug.c:7537\n scsi_queue_rq+0x16b4/0x2d10 drivers/scsi/scsi_lib.c:1521\n blk_mq_dispatch_rq_list+0xb9b/0x2700 block/blk-mq.c:1640\n __blk_mq_sched_dispatch_requests+0x28f/0x590 block/blk-mq-sched.c:325\n blk_mq_sched_dispatch_requests+0x105/0x190 block/blk-mq-sched.c:358\n __blk_mq_run_hw_queue+0xe5/0x150 block/blk-mq.c:1762\n __blk_mq_delay_run_hw_queue+0x4f8/0x5c0 block/blk-mq.c:1839\n blk_mq_run_hw_queue+0x18d/0x350 block/blk-mq.c:1891\n blk_mq_sched_insert_request+0x3db/0x4e0 block/blk-mq-sched.c:474\n blk_execute_rq_nowait+0x16b/0x1c0 block/blk-exec.c:63\n sg_common_write.isra.18+0xeb3/0x2000 drivers/scsi/sg.c:837\n sg_new_write.isra.19+0x570/0x8c0 drivers/scsi/sg.c:775\n sg_ioctl_common+0x14d6/0x2710 drivers/scsi/sg.c:941\n sg_ioctl+0xa2/0x180 drivers/scsi/sg.c:1166\n __x64_sys_ioctl+0x19d/0x220 fs/ioctl.c:52\n do_syscall_64+0x3a/0x80 arch/x86/entry/common.c:50\n entry_SYSCALL_64_after_hwframe+0x44/0xae arch/x86/entry/entry_64.S:113", "affected": [ { "vendor": "Linux", "product": "Linux", "defaultStatus": "unaffected", "versions": [ { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "adcecd50da6cab7b4957cba0606771dcc846c5a9" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "90491283b4064220682e4b0687d07b05df01e3bf" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "04181973c38f3d6a353f9246dcf7fee08024fd9e" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "b847ecff850719c46c95acd25a0d555dfd16e10d" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "a9078e791426c2cbbdf28a320c3670f6e0a611e6" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "dfc3fff63793c571147930b13c0f8c689c4281ac" }, { "version": "231839102b54512ced7d3ee7fc9b8bcf5e3b583b", "status": "affected", "versionType": "git", "lessThan": "e0a2c28da11e2c2b963fc01d50acbf03045ac732" } ] }, { "vendor": "Linux", "product": "Linux", "defaultStatus": "affected", "versions": [ { "version": "2.6.19", "status": "affected" }, { "version": "0", "status": "unaffected", "versionType": "semver", "lessThan": "2.6.19" }, { "version": "4.9.294", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.9.*" }, { "version": "4.14.259", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.14.*" }, { "version": "4.19.222", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "4.19.*" }, { "version": "5.4.168", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.4.*" }, { "version": "5.10.88", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.10.*" }, { "version": "5.15.11", "status": "unaffected", "versionType": "semver", "lessThanOrEqual": "5.15.*" }, { "version": "5.16", "status": "unaffected", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*" } ] } ] } } }