{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-89849", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.770Z", "datePublished": "2026-09-16T10:31:23.180Z", "dateUpdated": "2026-10-19T08:53:42.181Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:53:42.181Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path\n\nqla2x00_status_entry() filters out non-TYPE_SRB entries and the\nSRB_NVME_CMD, SRB_BIDI_CMD and SRB_TM_CMD types, then falls through to a\nSCSI fast path that assumes the command is an SRB_SCSI_CMD. The first\nthing on that path, qla_chk_edif_rx_sa_delete_pending(), and the\nsubsequent handling both evaluate GET_CMD_SP(sp), i.e. sp->u.scmd.cmd.\n\nThe srb u union overlays the SCSI command pointer with other command\nlayouts (bsg_job, iocb_cmd). If firmware delivers an unexpected\nSTATUS_TYPE IOCB for a non-SCSI handle, sp->u.scmd.cmd can read as a\nnon-NULL garbage pointer, bypassing the NULL checks in\nqla_chk_edif_rx_sa_delete_pending() and at the cp == NULL test, and\nleading to a wild pointer dereference.\n\nReject any SRB whose type is not SRB_SCSI_CMD before entering the fast\npath. The outstanding_cmds slot is left untouched so a genuinely\nnon-SCSI command still completes through its proper handler." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:A - qla2xxx processes STATUS_TYPE IOCBs from the Fibre Channel/FCoE HBA response queue in interrupt context. A peer on the same SAN fabric can keep non-SCSI SRBs (login, CT, NACK, NVMe LS) outstanding and drive firmware completions; FC is a non-routable fabric, so Adjacent is the highest defensible vector.\nAC:L - Firmware already completes several non-SCSI types (NVMe, bidirectional, task-management) via STATUS_TYPE, and the SCSI fast path was an unguarded fall-through. Once a STATUS_TYPE IOCB names a non-SCSI handle, the type confusion is deterministic, with no race or layout outside attacker influence.\nPR:N - Fibre Channel has no host authentication by default. Fabric login, nameserver CT, target-mode NACK, and I/O completions are handled in the HBA ISR/DPC with no Linux account or capability required on the victim.\nUI:N - Response-queue processing runs automatically from the HBA interrupt and qla_do_work paths. No victim mount, open, or other user action is required.\nS:U - The type confusion and wild-pointer access occur in the host kernel that owns the qla2xxx driver. This is not a VM escape, IOMMU bypass, or other cross-authority impact.\nC:H - GET_CMD_SP(sp) overlays scsi_cmnd* with other SRB union members (bsg_job*, ctarg.iocb, ntfy, sa_ctl). Treating those live kernel pointers as scsi_cmnd yields wild reads of command and sense fields, a type-confusion primitive that can be leveraged for kernel memory disclosure.\nI:H - The same type confusion writes through the forged scsi_cmnd via scsi_set_resid and memset/memcpy of firmware sense data into cp->sense_buffer. Type confusion with those kernel writes is High integrity and can hijack control flow.\nA:H - Dereferencing the overlaid non-SCSI pointer as scsi_cmnd in interrupt/completion context causes a kernel oops or panic, matching related qla_chk_edif_rx_sa_delete_pending crashes on this path." } ] } ], "affected": [ { "product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": [ "drivers/scsi/qla2xxx/qla_dbg.c", "drivers/scsi/qla2xxx/qla_isr.c" ], "versions": [ { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "9204fb0888374083be74f799049649a17eab4191", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "b7418198b45b327194b97f856fe8ea8daa91f3fd", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "e38041b47c29316ba79b645e2ae0b713d216b1db", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9", "status": "affected", "versionType": "git" }, { "version": "dd30706e73b70d67e88fdaca688db7a3374fd5de", "lessThan": "0f41d07d72f2245208c45374ca8d0a1846cad667", "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/qla2xxx/qla_dbg.c", "drivers/scsi/qla2xxx/qla_isr.c" ], "versions": [ { "version": "5.15", "status": "affected" }, { "version": "0", "lessThan": "5.15", "status": "unaffected", "versionType": "semver" }, { "version": "5.15.221", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.1.188", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.6.157", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.12.110", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver" }, { "version": "6.18.51", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.2.5", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver" }, { "version": "7.3", "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": "5.15", "versionEndExcluding": "5.15.221" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.1.188" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "6.18.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.15", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/9204fb0888374083be74f799049649a17eab4191" }, { "url": "https://git.kernel.org/stable/c/b7418198b45b327194b97f856fe8ea8daa91f3fd" }, { "url": "https://git.kernel.org/stable/c/8f0e31e7a41376abe7d6ca7cbee07fcf9de071e6" }, { "url": "https://git.kernel.org/stable/c/e38041b47c29316ba79b645e2ae0b713d216b1db" }, { "url": "https://git.kernel.org/stable/c/e93aa3c5125d9a4352ac0fa8ba4a7f8f87881805" }, { "url": "https://git.kernel.org/stable/c/29f1f9ad9e354cd0b6e4f6fc75ba09162d6a04d9" }, { "url": "https://git.kernel.org/stable/c/0f41d07d72f2245208c45374ca8d0a1846cad667" } ], "title": "scsi: qla2xxx: Reject non-SCSI SRB on status IOCB fast path", "x_generator": { "engine": "bippy-1.2.0" } } } }