Skip to content
Heist/ feed
Back to feed
HighFix available

scsi: qla2xxx: Quiesce response IRQ before freeing request queue

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Quiesce response IRQ before freeing request queue qla2xxx_delete_qpair() deletes the request queue before the response queue. qla25xx_delete_req_que() frees the request queue memory (kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is only released later, in qla25xx_free_rsp_que(). In that window the response interrupt can still fire, qla2xxx_msix_rsp_q() queues qpair->q_work, and qla_do_work() -> qla24xx_process_response_queue() dereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the status path), a use-after-free. The cancel_work_sync() added for the qpair teardown lives in the response free path, which runs after the request queue is already freed, so it does not protect rsp->req. Release the response-queue interrupt and flush qpair->q_work before deleting the request queue, so no late completion can reach the freed request queue. Clearing have_irq makes the subsequent qla25xx_free_rsp_que() skip its free_irq(), and the firmware queue-delete order (request then response) is preserved; the request-delete mailbox completes on the default vector and is unaffected by dropping the qpair response interrupt early.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.273, 5.15.224, 6.1.191, 6.12.110, 6.18.51, 6.6.157, 7.2.5
CVEs
CVE-2026-89848
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 14:11 UTC · Revision 1

Source evidence

scsi: qla2xxx: Quiesce response IRQ before freeing request queue

core-osv · Original source

Published 16 Sept 2026, 10:31 UTC

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Quiesce response IRQ before freeing request queue qla2xxx_delete_qpair() deletes the request queue before the response queue. qla25xx_delete_req_que() frees the request queue memory (kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is only released later, in qla25xx_free_rsp_que(). In that window the response interrupt can still fire, qla2xxx_msix_rsp_q() queues qpair->q_work, and qla_do_work() -> qla24xx_process_response_queue() dereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the status path), a use-after-free. The cancel_work_sync() added for the qpair teardown lives in the response free path, which runs after the request queue is already freed, so it does not protect rsp->req. Release the response-queue interrupt and flush qpair->q_work before deleting the request queue, so no late completion can reach the freed request queue. Clearing have_irq makes the subsequent qla25xx_free_rsp_que() skip its free_irq(), and the firmware queue-delete order (request then response) is preserved; the request-delete mailbox completes on the default vector and is unaffected by dropping the qpair response interrupt early.

osv:CVE-2026-89848

Kernel

Fixed versions: 5.10.273, 5.15.224, 6.1.191, 6.6.157, 6.12.110, 6.18.51, 7.2.5

Complete source record
{
  "id": "1091ca038d6217dd0a0ab92bfba3253db0721db6baf8bde2f31e1a21a10cc0c6",
  "url": "https://osv.dev/vulnerability/CVE-2026-89848",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "scsi: qla2xxx: Quiesce response IRQ before freeing request queue",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Quiesce response IRQ before freeing request queue qla2xxx_delete_qpair() deletes the request queue before the response queue. qla25xx_delete_req_que() frees the request queue memory (kfree(req) in qla25xx_free_req_que()), but the response-queue MSI-X is only released later, in qla25xx_free_rsp_que(). In that window the response interrupt can still fire, qla2xxx_msix_rsp_q() queues qpair->q_work, and qla_do_work() -> qla24xx_process_response_queue() dereferences the now-freed rsp->req (LOGINOUT/CT/ELS entries and the status path), a use-after-free. The cancel_work_sync() added for the qpair teardown lives in the response free path, which runs after the request queue is already freed, so it does not protect rsp->req. Release the response-queue interrupt and flush qpair->q_work before deleting the request queue, so no late completion can reach the freed request queue. Clearing have_irq makes the subsequent qla25xx_free_rsp_que() skip its free_irq(), and the firmware queue-delete order (request then response) is preserved; the request-delete mailbox completes on the default vector and is unaffected by dropping the qpair response interrupt early.",
    "evidence": "osv:CVE-2026-89848",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.273",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.224",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.191",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.157",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.110",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.51",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.2.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-89848",
      "aliases": [
        "CVE-2026-89848"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d74595278f4ab192af66d9e60a9087464638beee"
                },
                {
                  "fixed": "730a18768b27582636b5af343069c30809b763a2"
                },
                {
                  "fixed": "be68aef64ab2e633867c4ac946d16644c306fc3d"
                },
                {
                  "fixed": "0a005dcc5e9bf7b31a45422b10f2765b25161389"
                },
                {
                  "fixed": "7ac5be2a8609679fc6bbfea881360444a5ce8202"
                },
                {
                  "fixed": "1486cc18be3e2b4c2a730f4a1b0448d009381b3d"
                },
                {
                  "fixed": "10e9f05f7fd0a103886a867ec8afe621fe4b906a"
                },
                {
                  "fixed": "157ca7d1af45f87aa14a286754f19c3f72386988"
                },
                {
                  "fixed": "505753ec2594c6af09a601f0dd60be7d840c1d2d"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89848.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.10.0"
                },
                {
                  "fixed": "5.10.273"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
                },
                {
                  "fixed": "5.15.224"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.191"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.157"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.110"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.51"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.2.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-89848.json"
          }
        }
      ],
      "modified": "2026-11-01T02:30:18.473135315Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0a005dcc5e9bf7b31a45422b10f2765b25161389",
        "https://git.kernel.org/stable/c/10e9f05f7fd0a103886a867ec8afe621fe4b906a",
        "https://git.kernel.org/stable/c/1486cc18be3e2b4c2a730f4a1b0448d009381b3d",
        "https://git.kernel.org/stable/c/157ca7d1af45f87aa14a286754f19c3f72386988",
        "https://git.kernel.org/stable/c/505753ec2594c6af09a601f0dd60be7d840c1d2d",
        "https://git.kernel.org/stable/c/730a18768b27582636b5af343069c30809b763a2",
        "https://git.kernel.org/stable/c/7ac5be2a8609679fc6bbfea881360444a5ce8202",
        "https://git.kernel.org/stable/c/be68aef64ab2e633867c4ac946d16644c306fc3d",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89848.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-89848",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89848.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-89848",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503471,
  "published_at": "2026-09-16T10:31:22.197+00:00"
}