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CVE-2025-68745 (GCVE-0-2025-68745)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-08-05 12:11
VLAI
Title
scsi: qla2xxx: Clear cmds after chip reset
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Clear cmds after chip reset Commit aefed3e5548f ("scsi: qla2xxx: target: Fix offline port handling and host reset handling") caused two problems: 1. Commands sent to FW, after chip reset got stuck and never freed as FW is not going to respond to them anymore. 2. BUG_ON(cmd->sg_mapped) in qlt_free_cmd(). Commit 26f9ce53817a ("scsi: qla2xxx: Fix missed DMA unmap for aborted commands") attempted to fix this, but introduced another bug under different circumstances when two different CPUs were racing to call qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in dma_unmap_sg_attrs(). So revert "scsi: qla2xxx: Fix missed DMA unmap for aborted commands" and partially revert "scsi: qla2xxx: target: Fix offline port handling and host reset handling" at __qla2x00_abort_all_cmds.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: aefed3e5548f28e5fecafda6604fcbc65484dbaa , < 5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936 (git)
Affected: aefed3e5548f28e5fecafda6604fcbc65484dbaa , < d46c69a087aa3d1513f7a78f871b80251ea0c1ae (git)
Affected: eb67b7a23d357f578578e737cb6412ae2384f352 (git)
Affected: ec9639d92c1e10d4bc667e842753d85e21683d5c (git)
Affected: e6e957f552d5b696879a31e5b0e2a9120e1ea86e (git)
Affected: 4.9.316 , < 4.10 (semver)
Affected: 4.14.281 , < 4.15 (semver)
Affected: 4.19.245 , < 4.20 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.2
Unaffected: 0 , < 5.2 (semver)
Unaffected: 6.18.2 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_os.c",
            "drivers/scsi/qla2xxx/qla_target.c",
            "drivers/scsi/qla2xxx/qla_target.h"
          ],
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          "vendor": "Linux",
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              "versionType": "git"
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            {
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              "status": "affected",
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              "version": "e6e957f552d5b696879a31e5b0e2a9120e1ea86e",
              "versionType": "git"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.316",
              "versionType": "semver"
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              "versionType": "semver"
            },
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              "status": "affected",
              "version": "4.19.245",
              "versionType": "semver"
            }
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        },
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/scsi/qla2xxx/qla_os.c",
            "drivers/scsi/qla2xxx/qla_target.c",
            "drivers/scsi/qla2xxx/qla_target.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.2",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
                },
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                },
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                },
                {
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              ],
              "negate": false,
              "operator": "OR"
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      ],
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: qla2xxx: Clear cmds after chip reset\n\nCommit aefed3e5548f (\"scsi: qla2xxx: target: Fix offline port handling\nand host reset handling\") caused two problems:\n\n1. Commands sent to FW, after chip reset got stuck and never freed as FW\n   is not going to respond to them anymore.\n\n2. BUG_ON(cmd-\u003esg_mapped) in qlt_free_cmd().  Commit 26f9ce53817a\n   (\"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\")\n   attempted to fix this, but introduced another bug under different\n   circumstances when two different CPUs were racing to call\n   qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in\n   dma_unmap_sg_attrs().\n\nSo revert \"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\" and\npartially revert \"scsi: qla2xxx: target: Fix offline port handling and\nhost reset handling\" at __qla2x00_abort_all_cmds."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - A remote Fibre Channel/FCoE initiator can reach the vulnerable command lifecycle by sending FCP I/O and ABTS/TMR frames, without local host access.\nAC:L - The initiator can keep large PI/DIF I/O active while repeatedly issuing abort or reset requests, controlling both sides of the abort-versus-completion race.\nPR:N - Dynamic/demo ACL configurations admit fabric initiators without credentials, and WWPN-based session establishment requires no privilege on the target host.\nUI:N - Exploitation requires only attacker-generated fabric traffic and no victim action during the attack.\nS:U - The vulnerable driver and the affected kernel memory and storage resources belong to the same security authority.\nC:H - Concurrent unmapping can double-free shared DIF CRC-context and DSD objects, producing overlapping firmware-visible DMA contexts that can expose kernel or cross-command data.\nI:H - The DMA-pool double-free and concurrent DSD list deletion can corrupt kernel memory or redirect device DMA, potentially enabling arbitrary modification or code execution.\nA:H - The reported paths reach kernel BUG assertions, while reset-time command leaks can permanently exhaust resources; either can crash or render the target unavailable."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:11:14.649Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936"
        },
        {
          "url": "https://git.kernel.org/stable/c/d46c69a087aa3d1513f7a78f871b80251ea0c1ae"
        }
      ],
      "title": "scsi: qla2xxx: Clear cmds after chip reset",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68745",
    "datePublished": "2025-12-24T12:09:41.517Z",
    "dateReserved": "2025-12-24T10:30:51.031Z",
    "dateUpdated": "2026-08-05T12:11:14.649Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2025-68745",
      "date": "2026-09-15",
      "epss": "0.00361",
      "percentile": "0.29492"
    },
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      "cve": "CVE-2025-68745",
      "id": "msrc_CVE-2025-68745",
      "initial_release_date": "2025-12-02T00:00:00.000Z",
      "product_status:known_affected": "12",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "scsi: qla2xxx: Clear cmds after chip reset",
      "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-68745.json",
      "version": "14"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68745\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T13:16:29.440\",\"lastModified\":\"2026-07-30T06:24:42.167\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nscsi: qla2xxx: Clear cmds after chip reset\\n\\nCommit aefed3e5548f (\\\"scsi: qla2xxx: target: Fix offline port handling\\nand host reset handling\\\") caused two problems:\\n\\n1. Commands sent to FW, after chip reset got stuck and never freed as FW\\n   is not going to respond to them anymore.\\n\\n2. BUG_ON(cmd-\u003esg_mapped) in qlt_free_cmd().  Commit 26f9ce53817a\\n   (\\\"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\\\")\\n   attempted to fix this, but introduced another bug under different\\n   circumstances when two different CPUs were racing to call\\n   qlt_unmap_sg() at the same time: BUG_ON(!valid_dma_direction(dir)) in\\n   dma_unmap_sg_attrs().\\n\\nSo revert \\\"scsi: qla2xxx: Fix missed DMA unmap for aborted commands\\\" and\\npartially revert \\\"scsi: qla2xxx: target: Fix offline port handling and\\nhost reset handling\\\" at __qla2x00_abort_all_cmds.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/scsi/qla2xxx/qla_os.c\",\"drivers/scsi/qla2xxx/qla_target.c\",\"drivers/scsi/qla2xxx/qla_target.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"aefed3e5548f28e5fecafda6604fcbc65484dbaa\",\"lessThan\":\"5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"aefed3e5548f28e5fecafda6604fcbc65484dbaa\",\"lessThan\":\"d46c69a087aa3d1513f7a78f871b80251ea0c1ae\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"eb67b7a23d357f578578e737cb6412ae2384f352\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"ec9639d92c1e10d4bc667e842753d85e21683d5c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"e6e957f552d5b696879a31e5b0e2a9120e1ea86e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4.9.316\",\"lessThan\":\"4.10\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.14.281\",\"lessThan\":\"4.15\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.19.245\",\"lessThan\":\"4.20\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/scsi/qla2xxx/qla_os.c\",\"drivers/scsi/qla2xxx/qla_target.c\",\"drivers/scsi/qla2xxx/qla_target.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"5.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.2\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}]},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/5c1fb3fd05da3d55b8cbc42d7d660b313cbdc936\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d46c69a087aa3d1513f7a78f871b80251ea0c1ae\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-15T11:38:31+00:00",
      "cve": "CVE-2025-68745",
      "id": "CVE-2025-68745",
      "initial_release_date": "2025-12-24T00:00:00+00:00",
      "product_status:fixed": "762",
      "product_status:known_affected": "36",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68745.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-12T16:44:24Z",
      "cve": "CVE-2025-68745",
      "id": "CVE-2025-68745",
      "initial_release_date": "2025-12-25T00:23:25Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "447",
      "product_status:known_not_affected": "36",
      "product_status:recommended": "198",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-68745",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-68745.json",
      "version": "27"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.