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cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach()

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach() In cxl_cancel_auto_attach(), it assumes cxled->pos is a valid index for accessing p->targets[]. However, cxled->pos can be set to negative errno in cxl_region_sort_targets() if cxl_calc_interleave_pos() fails. This causes the driver to use a negative index to access p->targets[], resulting in out-of-bounds access. Fix it by walking p->targets[] instead of using cxled->pos directly.

Products
Kernel
Affected versions
Not specified
Fixed versions
7.1.5
CVEs
CVE-2026-74275
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 00:44 UTC · Revision 1

Source evidence

cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach()

core-osv · Original source

Published 15 Aug 2026, 05:57 UTC

In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach() In cxl_cancel_auto_attach(), it assumes cxled->pos is a valid index for accessing p->targets[]. However, cxled->pos can be set to negative errno in cxl_region_sort_targets() if cxl_calc_interleave_pos() fails. This causes the driver to use a negative index to access p->targets[], resulting in out-of-bounds access. Fix it by walking p->targets[] instead of using cxled->pos directly.

osv:CVE-2026-74275

Kernel

Fixed versions: 7.1.5

Complete source record
{
  "id": "b47177b9680ea4264ee0ff9c38b0eeaf6cbe6377c7d491fa4a3d9dc5d6ea9d57",
  "url": "https://osv.dev/vulnerability/CVE-2026-74275",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: cxl/region: Fix out-of-bounds access in cxl_cancel_auto_attach() In cxl_cancel_auto_attach(), it assumes cxled->pos is a valid index for accessing p->targets[]. However, cxled->pos can be set to negative errno in cxl_region_sort_targets() if cxl_calc_interleave_pos() fails. This causes the driver to use a negative index to access p->targets[], resulting in out-of-bounds access. Fix it by walking p->targets[] instead of using cxled->pos directly.",
    "evidence": "osv:CVE-2026-74275",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-74275",
      "aliases": [
        "CVE-2026-74275"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/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": "87805c32e6ad7b5ce2d9f7f47e76081857a4a335"
                },
                {
                  "fixed": "44b2397eb67b7f728640989a22d062e41f94ab64"
                },
                {
                  "fixed": "cbda6a2c2bec2a5fb30a2ce85baeab15b5fc7db3"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74275.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "7.1.0"
                },
                {
                  "fixed": "7.1.5"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-74275.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.383774372Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/44b2397eb67b7f728640989a22d062e41f94ab64",
        "https://git.kernel.org/stable/c/cbda6a2c2bec2a5fb30a2ce85baeab15b5fc7db3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74275.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74275",
        "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/2026/74xxx/CVE-2026-74275.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-74275",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516716,
  "published_at": "2026-08-15T05:57:47.455+00:00"
}