github - ghsa-786c-r55j-68wj

ghsa-786c-r55j-68wj

Vulnerability from github

Published

2024-09-18 09:30

Modified

2024-09-20 18:32

Severity ?

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

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

libfs: fix get_stashed_dentry()

get_stashed_dentry() tries to optimistically retrieve a stashed dentry from a provided location. It needs to ensure to hold rcu lock before it dereference the stashed location to prevent UAF issues. Use rcu_dereference() instead of READ_ONCE() it's effectively equivalent with some lockdep bells and whistles and it communicates clearly that this expects rcu protection.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-46801"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-18T08:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibfs: fix get_stashed_dentry()\n\nget_stashed_dentry() tries to optimistically retrieve a stashed dentry\nfrom a provided location.  It needs to ensure to hold rcu lock before it\ndereference the stashed location to prevent UAF issues.  Use\nrcu_dereference() instead of READ_ONCE() it\u0027s effectively equivalent\nwith some lockdep bells and whistles and it communicates clearly that\nthis expects rcu protection.",
  "id": "GHSA-786c-r55j-68wj",
  "modified": "2024-09-20T18:32:26Z",
  "published": "2024-09-18T09:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-46801"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/03e2a1209a83a380df34a72f7d6d1bc6c74132c7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e32c25b58b945f976435bbe51f39b32d714052e"
    }
  ],
  "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-2024-46801

Vulnerability from cvelistv5

Published

2024-09-18 07:12

Modified

2024-12-19 09:23

Severity ?

Summary

In the Linux kernel, the following vulnerability has been resolved: libfs: fix get_stashed_dentry() get_stashed_dentry() tries to optimistically retrieve a stashed dentry from a provided location. It needs to ensure to hold rcu lock before it dereference the stashed location to prevent UAF issues. Use rcu_dereference() instead of READ_ONCE() it's effectively equivalent with some lockdep bells and whistles and it communicates clearly that this expects rcu protection.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/03e2a1209a83a380df34a72f7d6d1bc6c74132c7
	https://git.kernel.org/stable/c/4e32c25b58b945f976435bbe51f39b32d714052e

Impacted products

Vendor

Product

Version

▼

Linux

Version: 07fd7c329839cf0b8c7766883d830a1a0d12d1dd
Version: 07fd7c329839cf0b8c7766883d830a1a0d12d1dd

Linux

Version: 6.9

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-46801",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-09-29T14:21:32.435301Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-09-29T14:21:44.290Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/libfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "03e2a1209a83a380df34a72f7d6d1bc6c74132c7",
              "status": "affected",
              "version": "07fd7c329839cf0b8c7766883d830a1a0d12d1dd",
              "versionType": "git"
            },
            {
              "lessThan": "4e32c25b58b945f976435bbe51f39b32d714052e",
              "status": "affected",
              "version": "07fd7c329839cf0b8c7766883d830a1a0d12d1dd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/libfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibfs: fix get_stashed_dentry()\n\nget_stashed_dentry() tries to optimistically retrieve a stashed dentry\nfrom a provided location.  It needs to ensure to hold rcu lock before it\ndereference the stashed location to prevent UAF issues.  Use\nrcu_dereference() instead of READ_ONCE() it\u0027s effectively equivalent\nwith some lockdep bells and whistles and it communicates clearly that\nthis expects rcu protection."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T09:23:25.355Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/03e2a1209a83a380df34a72f7d6d1bc6c74132c7"
        },
        {
          "url": "https://git.kernel.org/stable/c/4e32c25b58b945f976435bbe51f39b32d714052e"
        }
      ],
      "title": "libfs: fix get_stashed_dentry()",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-46801",
    "datePublished": "2024-09-18T07:12:55.150Z",
    "dateReserved": "2024-09-11T15:12:18.280Z",
    "dateUpdated": "2024-12-19T09:23:25.355Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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