Vulnerability-Lookup

GHSA-WMR5-8RGC-R7P9

Vulnerability from github – Published: 2025-05-01 15:31 – Updated: 2025-11-07 00:30

Details

In the Linux kernel, the following vulnerability has been resolved:

ublk: fix handling recovery & reissue in ublk_abort_queue()

Commit 8284066946e6 ("ublk: grab request reference when the request is handled by userspace") doesn't grab request reference in case of recovery reissue. Then the request can be requeued & re-dispatch & failed when canceling uring command.

If it is one zc request, the request can be freed before io_uring returns the zc buffer back, then cause kernel panic:

[ 126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [ 126.773657] #PF: supervisor read access in kernel mode [ 126.774052] #PF: error_code(0x0000) - not-present page [ 126.774455] PGD 0 P4D 0 [ 126.774698] Oops: Oops: 0000 [#1] SMP NOPTI [ 126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full) [ 126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014 [ 126.776275] Workqueue: iou_exit io_ring_exit_work [ 126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]

Fixes it by always grabbing request reference for aborting the request.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-37759"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-05-01T13:15:54Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix handling recovery \u0026 reissue in ublk_abort_queue()\n\nCommit 8284066946e6 (\"ublk: grab request reference when the request is handled\nby userspace\") doesn\u0027t grab request reference in case of recovery reissue.\nThen the request can be requeued \u0026 re-dispatch \u0026 failed when canceling\nuring command.\n\nIf it is one zc request, the request can be freed before io_uring\nreturns the zc buffer back, then cause kernel panic:\n\n[  126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8\n[  126.773657] #PF: supervisor read access in kernel mode\n[  126.774052] #PF: error_code(0x0000) - not-present page\n[  126.774455] PGD 0 P4D 0\n[  126.774698] Oops: Oops: 0000 [#1] SMP NOPTI\n[  126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full)\n[  126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014\n[  126.776275] Workqueue: iou_exit io_ring_exit_work\n[  126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]\n\nFixes it by always grabbing request reference for aborting the request.",
  "id": "GHSA-wmr5-8rgc-r7p9",
  "modified": "2025-11-07T00:30:26Z",
  "published": "2025-05-01T15:31:43Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-37759"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a21d259ca4d6310fdfcc0284ebbc000e66cbf70"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5d34a30efac9c9c93e150130caa940c0df6053c1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/caa5c8a2358604f38bf0a4afaa5eacda13763067"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-37759 (GCVE-0-2025-37759)

Vulnerability from cvelistv5 – Published: 2025-05-01 12:56 – Updated: 2026-05-11 21:14

Title

ublk: fix handling recovery & reissue in ublk_abort_queue()

Summary

In the Linux kernel, the following vulnerability has been resolved: ublk: fix handling recovery & reissue in ublk_abort_queue() Commit 8284066946e6 ("ublk: grab request reference when the request is handled by userspace") doesn't grab request reference in case of recovery reissue. Then the request can be requeued & re-dispatch & failed when canceling uring command. If it is one zc request, the request can be freed before io_uring returns the zc buffer back, then cause kernel panic: [ 126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8 [ 126.773657] #PF: supervisor read access in kernel mode [ 126.774052] #PF: error_code(0x0000) - not-present page [ 126.774455] PGD 0 P4D 0 [ 126.774698] Oops: Oops: 0000 [#1] SMP NOPTI [ 126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full) [ 126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014 [ 126.776275] Workqueue: iou_exit io_ring_exit_work [ 126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv] Fixes it by always grabbing request reference for aborting the request.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/caa5c8a2358604f38…
https://git.kernel.org/stable/c/5d34a30efac9c9c93…
https://git.kernel.org/stable/c/0a21d259ca4d6310f…
https://git.kernel.org/stable/c/6ee6bd5d4fce502a5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8284066946e6d9cc979566ce698fe24e7ca0b31e , < caa5c8a2358604f38bf0a4afaa5eacda13763067 (git) Affected: 8284066946e6d9cc979566ce698fe24e7ca0b31e , < 5d34a30efac9c9c93e150130caa940c0df6053c1 (git) Affected: 8284066946e6d9cc979566ce698fe24e7ca0b31e , < 0a21d259ca4d6310fdfcc0284ebbc000e66cbf70 (git) Affected: 8284066946e6d9cc979566ce698fe24e7ca0b31e , < 6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f (git)
Linux	Linux	Affected: 6.5 Unaffected: 0 , < 6.5 (semver) Unaffected: 6.12.24 , ≤ 6.12.* (semver) Unaffected: 6.13.12 , ≤ 6.13.* (semver) Unaffected: 6.14.3 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/ublk_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "caa5c8a2358604f38bf0a4afaa5eacda13763067",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "5d34a30efac9c9c93e150130caa940c0df6053c1",
              "status": "affected",
              "version": "8284066946e6d9cc979566ce698fe24e7ca0b31e",
              "versionType": "git"
            },
            {
              "lessThan": "0a21d259ca4d6310fdfcc0284ebbc000e66cbf70",
              "status": "affected",
              "version": "8284066946e6d9cc979566ce698fe24e7ca0b31e",
              "versionType": "git"
            },
            {
              "lessThan": "6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f",
              "status": "affected",
              "version": "8284066946e6d9cc979566ce698fe24e7ca0b31e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/block/ublk_drv.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.5"
            },
            {
              "lessThan": "6.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.13.*",
              "status": "unaffected",
              "version": "6.13.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.14.*",
              "status": "unaffected",
              "version": "6.14.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.15",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.24",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.13.12",
                  "versionStartIncluding": "6.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.5",
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
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              "negate": false,
              "operator": "OR"
            }
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nublk: fix handling recovery \u0026 reissue in ublk_abort_queue()\n\nCommit 8284066946e6 (\"ublk: grab request reference when the request is handled\nby userspace\") doesn\u0027t grab request reference in case of recovery reissue.\nThen the request can be requeued \u0026 re-dispatch \u0026 failed when canceling\nuring command.\n\nIf it is one zc request, the request can be freed before io_uring\nreturns the zc buffer back, then cause kernel panic:\n\n[  126.773061] BUG: kernel NULL pointer dereference, address: 00000000000000c8\n[  126.773657] #PF: supervisor read access in kernel mode\n[  126.774052] #PF: error_code(0x0000) - not-present page\n[  126.774455] PGD 0 P4D 0\n[  126.774698] Oops: Oops: 0000 [#1] SMP NOPTI\n[  126.775034] CPU: 13 UID: 0 PID: 1612 Comm: kworker/u64:55 Not tainted 6.14.0_blk+ #182 PREEMPT(full)\n[  126.775676] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-1.fc39 04/01/2014\n[  126.776275] Workqueue: iou_exit io_ring_exit_work\n[  126.776651] RIP: 0010:ublk_io_release+0x14/0x130 [ublk_drv]\n\nFixes it by always grabbing request reference for aborting the request."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:14:35.765Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/6ee6bd5d4fce502a5b5a2ea805e9ff16e6aa890f"
        }
      ],
      "title": "ublk: fix handling recovery \u0026 reissue in ublk_abort_queue()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37759",
    "datePublished": "2025-05-01T12:56:03.462Z",
    "dateReserved": "2025-04-16T04:51:23.938Z",
    "dateUpdated": "2026-05-11T21:14:35.765Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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