{"api_version":"1","generated_at":"2026-09-16T16:40:20+00:00","cve":"CVE-2026-89848","urls":{"html":"https://cve.report/CVE-2026-89848","api":"https://cve.report/api/cve/CVE-2026-89848.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89848","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89848"},"summary":{"title":"scsi: qla2xxx: Quiesce response IRQ before freeing request queue","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-16 11:16:52","updated_at":"2026-09-16 15:18:13"},"problem_types":[],"metrics":[{"version":"3.1","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"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","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"baseScore":8.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d","name":"https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202","name":"https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d","name":"https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a","name":"https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988","name":"https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89848","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89848","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d74595278f4ab192af66d9e60a9087464638beee 7ac5be2a8609679fc6bbfea881360444a5ce8202 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d74595278f4ab192af66d9e60a9087464638beee 1486cc18be3e2b4c2a730f4a1b0448d009381b3d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d74595278f4ab192af66d9e60a9087464638beee 10e9f05f7fd0a103886a867ec8afe621fe4b906a git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d74595278f4ab192af66d9e60a9087464638beee 157ca7d1af45f87aa14a286754f19c3f72386988 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d74595278f4ab192af66d9e60a9087464638beee 505753ec2594c6af09a601f0dd60be7d840c1d2d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.157 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.51 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.5 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["drivers/scsi/qla2xxx/qla_init.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7ac5be2a8609679fc6bbfea881360444a5ce8202","status":"affected","version":"d74595278f4ab192af66d9e60a9087464638beee","versionType":"git"},{"lessThan":"1486cc18be3e2b4c2a730f4a1b0448d009381b3d","status":"affected","version":"d74595278f4ab192af66d9e60a9087464638beee","versionType":"git"},{"lessThan":"10e9f05f7fd0a103886a867ec8afe621fe4b906a","status":"affected","version":"d74595278f4ab192af66d9e60a9087464638beee","versionType":"git"},{"lessThan":"157ca7d1af45f87aa14a286754f19c3f72386988","status":"affected","version":"d74595278f4ab192af66d9e60a9087464638beee","versionType":"git"},{"lessThan":"505753ec2594c6af09a601f0dd60be7d840c1d2d","status":"affected","version":"d74595278f4ab192af66d9e60a9087464638beee","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/scsi/qla2xxx/qla_init.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.10"},{"lessThan":"4.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.157","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.51","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.5","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.157","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.51","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.5","versionStartIncluding":"4.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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":{"baseScore":8.1,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"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."}]}],"providerMetadata":{"dateUpdated":"2026-09-16T14:39:16.899Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"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"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89848","datePublished":"2026-09-16T10:31:22.197Z","dateReserved":"2026-09-11T19:38:34.770Z","dateUpdated":"2026-09-16T14:39:16.899Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-16 11:16:52","lastModifiedDate":"2026-09-16 15:18:13","problem_types":[],"metrics":{"cvssMetricV31":[{"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","type":"Secondary","cvssData":{"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","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89848","Ordinal":"1","Title":"scsi: qla2xxx: Quiesce response IRQ before freeing request queue","CVE":"CVE-2026-89848","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89848","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"scsi: qla2xxx: Quiesce response IRQ before freeing request queue"}]}}}