{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2023-54100", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-12-24T13:02:52.517Z", "datePublished": "2025-12-24T13:06:26.560Z", "dateUpdated": "2026-08-05T09:17:17.178Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T09:17:17.178Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qedi: Fix use after free bug in qedi_remove()\n\nIn qedi_probe() we call __qedi_probe() which initializes\n&qedi->recovery_work with qedi_recovery_handler() and\n&qedi->board_disable_work with qedi_board_disable_work().\n\nWhen qedi_schedule_recovery_handler() is called, schedule_delayed_work()\nwill finally start the work.\n\nIn qedi_remove(), which is called to remove the driver, the following\nsequence may be observed:\n\nFix this by finishing the work before cleanup in qedi_remove().\n\nCPU0 CPU1\n\n |qedi_recovery_handler\nqedi_remove |\n __qedi_remove |\niscsi_host_free |\nscsi_host_put |\n//free shost |\n |iscsi_host_for_each_session\n |//use qedi->shost\n\nCancel recovery_work and board_disable_work in __qedi_remove()." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:L - The race is between local PCI driver teardown (unbind/rmmod/hotplug of the QLogic FastLinQ iSCSI device) and a locally-schedulable recovery work item; there is no remote or network-facing path into `qedi_remove()` or the devlink health-reporter recover op.\nAC:L - An attacker with local access controls the timing of the device-removal side and can repeatedly re-trigger the recovery/board-disable work (devlink fw_fatal recover, MFW error paths) to widen the window, so the race can be driven deterministically rather than depending on conditions outside the attacker's influence.\nPR:L - Consistent with prior scoring of this driver-teardown UAF class (e.g. CVE-2025-37838), a low-privileged local account on a host exporting the qedi device/devlink interfaces is treated as sufficient; no authentication beyond local account access is needed to reach the racing work handler.\nUI:N - Both sides of the race are attacker-driven administrative/driver events; no victim action such as opening a file or mounting a filesystem is required.\nS:U - The use-after-free corrupts kernel heap memory within the same kernel security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - `qedi_ctx` is embedded in the freed `Scsi_Host` allocation, so the handler reads `qedi->shost`, `qedi->cdev`, and `qedi->pdev` out of freed slab memory; an attacker who reclaims that slot obtains a controlled read primitive and can disclose arbitrary kernel memory.\nI:H - `qedi_recovery_handler()` calls `__qedi_remove()` followed by `__qedi_probe()` on the freed context, writing function pointers, work_structs, and DMA state into the reclaimed allocation — a powerful write primitive suitable for control-flow hijacking.\nA:H - Even unexploited, dereferencing and re-initializing the freed `Scsi_Host`/`qedi_ctx` and iterating its session list produces slab corruption and a kernel oops/panic." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/qedi/qedi_main.c" ], "versions": [ { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "fa19c533ab19161298f0780bcc6523af88f6fd20", "status": "affected", "versionType": "git" }, { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151", "status": "affected", "versionType": "git" }, { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "3738a230831e861503119ee2691c4a7dc56ed60a", "status": "affected", "versionType": "git" }, { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "89f6023fc321c958a0fb11f143a6eb4544ae3940", "status": "affected", "versionType": "git" }, { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "124027cd1a624ce0347adcd59241a9966a726b22", "status": "affected", "versionType": "git" }, { "version": "4b1068f5d74b6cc92319bd7eba40809b1222e73f", "lessThan": "c5749639f2d0a1f6cbe187d05f70c2e7c544d748", "status": "affected", "versionType": "git" } ] }, { "product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/qedi/qedi_main.c" ], "versions": [ { "version": "5.7", "status": "affected" }, { "version": "0", "lessThan": "5.7", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.180", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.112", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.29", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.2.16", "lessThanOrEqual": "6.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.3.3", "lessThanOrEqual": "6.3.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.4", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ] } ], "cpeApplicability": [ { "nodes": [ { "operator": "OR", "negate": false, "cpeMatch": [ { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.10.180" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "5.15.112" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.1.29" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.2.16" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.3.3" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.7", "versionEndExcluding": "6.4" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/fa19c533ab19161298f0780bcc6523af88f6fd20" }, { "url": "https://git.kernel.org/stable/c/5e756a59cee6a8a79b9059c5bdf0ecbf5bb8d151" }, { "url": "https://git.kernel.org/stable/c/3738a230831e861503119ee2691c4a7dc56ed60a" }, { "url": "https://git.kernel.org/stable/c/89f6023fc321c958a0fb11f143a6eb4544ae3940" }, { "url": "https://git.kernel.org/stable/c/124027cd1a624ce0347adcd59241a9966a726b22" }, { "url": "https://git.kernel.org/stable/c/c5749639f2d0a1f6cbe187d05f70c2e7c544d748" } ], "title": "scsi: qedi: Fix use after free bug in qedi_remove()", "x_generator": { "engine": "bippy-1.2.0" } } } }