{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-89848", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.770Z", "datePublished": "2026-09-16T10:31:22.197Z", "dateUpdated": "2026-10-19T08:53:41.145Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T08:53:41.145Z" }, "descriptions": [ { "lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Quiesce response IRQ before freeing request queue\n\nqla2xxx_delete_qpair() deletes the request queue before the response\nqueue. qla25xx_delete_req_que() frees the request queue memory\n(kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is\nonly released later, in qla25xx_free_rsp_que(). In that window the\nresponse interrupt can still fire, qla2xxx_msix_rsp_q() queues\nqpair->q_work, and qla_do_work() -> qla24xx_process_response_queue()\ndereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the\nstatus path), a use-after-free.\n\nThe cancel_work_sync() added for the qpair teardown lives in the\nresponse free path, which runs after the request queue is already freed,\nso it does not protect rsp->req.\n\nRelease the response-queue interrupt and flush qpair->q_work before\ndeleting the request queue, so no late completion can reach the freed\nrequest queue. Clearing have_irq makes the subsequent\nqla25xx_free_rsp_que() skip its free_irq(), and the firmware\nqueue-delete order (request then response) is preserved; the\nrequest-delete mailbox completes on the default vector and is unaffected\nby dropping the qpair response interrupt early." } ], "metrics": [ { "cvssV3_1": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH" }, "scenarios": [ { "lang": "en", "value": "AV:N - qla24xx_process_response_queue() runs from the qla2xxx response-queue MSI-X/work path on firmware-DMAed LOGINOUT/CT/ELS/status IOCBs from Fibre Channel, FCoE, or FCIP traffic; a remote SAN peer can induce those completions without a local syscall, matching sibling CVE-2026-89845 Network scoring of the same teardown window.\nAC:H - The use-after-free requires qla25xx_free_req_que() to kfree the request queue while the response MSI-X is still registered, which occurs only during qpair, NPIV vport, or device teardown, a victim state a fabric attacker cannot initiate.\nPR:N - Response-queue interrupt handling of LOGINOUT/CT/ELS/status completions runs from unauthenticated Fibre Channel firmware IOCBs with no Linux credential or capability check, so a fabric peer needs no account on the victim host.\nUI:N - Response-queue interrupt handling is automatic; concurrent qpair teardown occurs during routine driver remove, NPIV vport deletion, or PCI removal without interactive victim actions such as mounting a filesystem.\nS:U - The use-after-free is inside the host kernel qla2xxx driver and does not cross a VM, IOMMU, or other separate security-authority boundary.\nC:H - After kfree(req), rsp->req remains dangling and qla_get_sp_from_handle() reads req->num_outstanding_cmds and req->outstanding_cmds[]; that request-queue use-after-free enables disclosure of reused heap contents.\nI:H - qla2x00_get_sp_from_handle() writes NULL into the freed outstanding_cmds slot, and subsequent LOGINOUT/CT/ELS completion handling operates on a recycled req/srb object, yielding a kernel write and control-flow hijack primitive.\nA:H - Use-after-free of the request queue from qla_do_work()/qla24xx_process_response_queue produces a kernel oops or panic even when not fully exploited, taking down storage served by the adapter." } ] } ], "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_init.c" ], "versions": [ { "version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "7ac5be2a8609679fc6bbfea881360444a5ce8202", "status": "affected", "versionType": "git" }, { "version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "1486cc18be3e2b4c2a730f4a1b0448d009381b3d", "status": "affected", "versionType": "git" }, { "version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "10e9f05f7fd0a103886a867ec8afe621fe4b906a", "status": "affected", "versionType": "git" }, { "version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "157ca7d1af45f87aa14a286754f19c3f72386988", "status": "affected", "versionType": "git" }, { "version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "505753ec2594c6af09a601f0dd60be7d840c1d2d", "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_init.c" ], "versions": [ { "version": "4.10", "status": "affected" }, { "version": "0", "lessThan": "4.10", "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": "4.10", "versionEndExcluding": "6.6.157" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.12.110" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.18.51" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.2.5" }, { "vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "7.3" } ] } ] } ], "references": [ { "url": "https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202" }, { "url": "https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d" }, { "url": "https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a" }, { "url": "https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988" }, { "url": "https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d" } ], "title": "scsi: qla2xxx: Quiesce response IRQ before freeing request queue", "x_generator": { "engine": "bippy-1.2.0" } } } }