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crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path Unregister the hwrng to prevent new ->read() calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while the device is being removed. Drop the early return to ensure sysfs entries are removed and ->hwrng.priv is freed, preventing a memory leak.

Products
Kernel
Affected versions
Not specified
Fixed versions
6.1.175, 6.12.86, 6.18.27, 6.6.140, 7.0.4
CVEs
CVE-2026-46075
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 10:24 UTC · Revision 1

Source evidence

crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path

core-osv · Original source

Published 27 May 2026, 12:58 UTC

In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path Unregister the hwrng to prevent new ->read() calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while the device is being removed. Drop the early return to ensure sysfs entries are removed and ->hwrng.priv is freed, preventing a memory leak.

osv:CVE-2026-46075

Kernel

Fixed versions: 6.1.175, 6.6.140, 6.12.86, 6.18.27, 7.0.4

Complete source record
{
  "id": "d2c06da982a577d03e474eff8f35a412df1bc3300e1590025814465894825b5f",
  "url": "https://osv.dev/vulnerability/CVE-2026-46075",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path Unregister the hwrng to prevent new ->read() calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while the device is being removed. Drop the early return to ensure sysfs entries are removed and ->hwrng.priv is freed, preventing a memory leak.",
    "evidence": "osv:CVE-2026-46075",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.175",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.140",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.86",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.27",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-46075",
      "aliases": [
        "CVE-2026-46075"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                },
                {
                  "fixed": "c5a45d14234bf26e28a89e3a5dcc08336595cf11"
                },
                {
                  "fixed": "775c00d87c385b758da9504cf053acea00e2ed40"
                },
                {
                  "fixed": "1193c12126d39bf986a5a9214827b73707b193ab"
                },
                {
                  "fixed": "31901371ccd16b42d2f167b1018ba9ae8bd5a6c7"
                },
                {
                  "fixed": "bab1adf3b87e4bfac92c4f5963c63db434d561c1"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46075.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.3.0"
                },
                {
                  "fixed": "6.1.175"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.140"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.12.86"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.13.0"
                },
                {
                  "fixed": "6.18.27"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.19.0"
                },
                {
                  "fixed": "7.0.4"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46075.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:43.965786278Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/1193c12126d39bf986a5a9214827b73707b193ab",
        "https://git.kernel.org/stable/c/31901371ccd16b42d2f167b1018ba9ae8bd5a6c7",
        "https://git.kernel.org/stable/c/6dbeb0f788582e1ab5dfc3f41994eac0ec88c2b5",
        "https://git.kernel.org/stable/c/775c00d87c385b758da9504cf053acea00e2ed40",
        "https://git.kernel.org/stable/c/bab1adf3b87e4bfac92c4f5963c63db434d561c1",
        "https://git.kernel.org/stable/c/c5a45d14234bf26e28a89e3a5dcc08336595cf11",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46075.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-46075",
        "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/2026/46xxx/CVE-2026-46075.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-46075",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 511617,
  "published_at": "2026-05-27T12:58:07.08+00:00"
}