github - ghsa-ppp3-73jm-5rm6

ghsa-ppp3-73jm-5rm6

Vulnerability from github

Published

2024-12-27 15:31

Modified

2025-01-06 15:30

Severity ?

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

Details

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

bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors

Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period.

Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-56675"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-416"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:27Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors\n\nUprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU\nprotection. But it is possible to attach a non-sleepable BPF program to a\nuprobe, and non-sleepable BPF programs are freed via normal RCU (see\n__bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal\nRCU grace period does not imply a tasks-trace-RCU grace period.\n\nFix it by explicitly waiting for a tasks-trace-RCU grace period after\nremoving the attachment of a bpf_prog to a perf_event.",
  "id": "GHSA-ppp3-73jm-5rm6",
  "modified": "2025-01-06T15:30:59Z",
  "published": "2024-12-27T15:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56675"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-56675

Vulnerability from cvelistv5

Published

2024-12-27 15:06

Modified

2025-02-10 17:21

Severity ?

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

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.

References

▼	URL	Tags
	https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a
	https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5
	https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d
	https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956

Impacted products

Vendor

Product

Version

▼

Linux

Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9
Version: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9

Linux

Version: 6.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-56675",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-10T17:12:26.615244Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-02-10T17:21:07.132Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/bpf_trace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9245459a992d22fe0e92e988f49db1fec82c184a",
              "status": "affected",
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "versionType": "git"
            },
            {
              "lessThan": "f9f85df30118f3f4112761e6682fc60ebcce23e5",
              "status": "affected",
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "versionType": "git"
            },
            {
              "lessThan": "9b53d2c2a38a1effc341d99be3f99fa7ef17047d",
              "status": "affected",
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "versionType": "git"
            },
            {
              "lessThan": "ef1b808e3b7c98612feceedf985c2fbbeb28f956",
              "status": "affected",
              "version": "8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/trace/bpf_trace.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors\n\nUprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU\nprotection. But it is possible to attach a non-sleepable BPF program to a\nuprobe, and non-sleepable BPF programs are freed via normal RCU (see\n__bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal\nRCU grace period does not imply a tasks-trace-RCU grace period.\n\nFix it by explicitly waiting for a tasks-trace-RCU grace period after\nremoving the attachment of a bpf_prog to a perf_event."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-01-20T06:25:42.773Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9245459a992d22fe0e92e988f49db1fec82c184a"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9f85df30118f3f4112761e6682fc60ebcce23e5"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b53d2c2a38a1effc341d99be3f99fa7ef17047d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef1b808e3b7c98612feceedf985c2fbbeb28f956"
        }
      ],
      "title": "bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors",
      "x_generator": {
        "engine": "bippy-5f407fcff5a0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-56675",
    "datePublished": "2024-12-27T15:06:36.183Z",
    "dateReserved": "2024-12-27T15:00:39.845Z",
    "dateUpdated": "2025-02-10T17:21:07.132Z",
    "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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