CVE-2026-89848

{"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": "2026-10-30T12:33:18.481Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:33:18.481Z"}, "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": "730a18768b27582636b5af343069c30809b763a2", "status": "affected", "versionType": "git"}, {"version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "be68aef64ab2e633867c4ac946d16644c306fc3d", "status": "affected", "versionType": "git"}, {"version": "d74595278f4ab192af66d9e60a9087464638beee", "lessThan": "0a005dcc5e9bf7b31a45422b10f2765b25161389", "status": "affected", "versionType": "git"}, {"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": "5.10.273", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.224", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "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": "4.10", "versionEndExcluding": "5.10.273"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "5.15.224"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.10", "versionEndExcluding": "6.1.191"}, {"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/730a18768b27582636b5af343069c30809b763a2"}, {"url": "https://git.kernel.org/stable/c/be68aef64ab2e633867c4ac946d16644c306fc3d"}, {"url": "https://git.kernel.org/stable/c/0a005dcc5e9bf7b31a45422b10f2765b25161389"}, {"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"}}}}

{}

{"affected": [{"affectedData": [{"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": "730a18768b27582636b5af343069c30809b763a2", "status": "affected", "version": "d74595278f4ab192af66d9e60a9087464638beee", "versionType": "git"}, {"lessThan": "be68aef64ab2e633867c4ac946d16644c306fc3d", "status": "affected", "version": "d74595278f4ab192af66d9e60a9087464638beee", "versionType": "git"}, {"lessThan": "0a005dcc5e9bf7b31a45422b10f2765b25161389", "status": "affected", "version": "d74595278f4ab192af66d9e60a9087464638beee", "versionType": "git"}, {"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": "5.10.*", "status": "unaffected", "version": "5.10.273", "versionType": "semver"}, {"lessThanOrEqual": "5.15.*", "status": "unaffected", "version": "5.15.224", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "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", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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."}], "id": "CVE-2026-89848", "lastModified": "2026-10-30T13:20:32.670", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}]}, "published": "2026-09-16T11:16:52.197", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0a005dcc5e9bf7b31a45422b10f2765b25161389"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/730a18768b27582636b5af343069c30809b763a2"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/be68aef64ab2e633867c4ac946d16644c306fc3d"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d74595278f4ab192af66d9e60a9087464638beee,7ac5be2a8609679fc6bbfea881360444a5ce8202)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d74595278f4ab192af66d9e60a9087464638beee,1486cc18be3e2b4c2a730f4a1b0448d009381b3d)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d74595278f4ab192af66d9e60a9087464638beee,10e9f05f7fd0a103886a867ec8afe621fe4b906a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d74595278f4ab192af66d9e60a9087464638beee,157ca7d1af45f87aa14a286754f19c3f72386988)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d74595278f4ab192af66d9e60a9087464638beee,505753ec2594c6af09a601f0dd60be7d840c1d2d)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "4.10"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,4.10)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.157,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.110,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.51,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.5,7.3.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-09-16T18:30:07.617846+00:00", "updated": "2026-09-18T09:45:06.362756+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"], "weaknesses": ["CWE-416"]}