CVE-2024-38574 (GCVE-0-2024-38574)

Vulnerability from cvelistv5 – Published: 2024-06-19 13:35 – Updated: 2026-05-11 20:19
VLAI
Title
libbpf: Prevent null-pointer dereference when prog to load has no BTF
Summary
In the Linux kernel, the following vulnerability has been resolved: libbpf: Prevent null-pointer dereference when prog to load has no BTF In bpf_objec_load_prog(), there's no guarantee that obj->btf is non-NULL when passing it to btf__fd(), and this function does not perform any check before dereferencing its argument (as bpf_object__btf_fd() used to do). As a consequence, we get segmentation fault errors in bpftool (for example) when trying to load programs that come without BTF information. v2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd().
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:14 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < ef80b59acfa4dee4b5eaccb15572b69248831104 (git)
Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < 1fd91360a75833b7110af9834ae26c977e1273e0 (git)
Affected: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e , < 9bf48fa19a4b1d186e08b20bf7e5de26a15644fb (git)
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Linux Linux Affected: 6.8
Unaffected: 0 , < 6.8 (semver)
Unaffected: 6.8.12 , ≤ 6.8.* (semver)
Unaffected: 6.9.3 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
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              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "tools/lib/bpf/libbpf.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "ef80b59acfa4dee4b5eaccb15572b69248831104",
                  "status": "affected",
                  "version": "df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e",
                  "versionType": "git"
                },
                {
                  "lessThan": "1fd91360a75833b7110af9834ae26c977e1273e0",
                  "status": "affected",
                  "version": "df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e",
                  "versionType": "git"
                },
                {
                  "lessThan": "9bf48fa19a4b1d186e08b20bf7e5de26a15644fb",
                  "status": "affected",
                  "version": "df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "tools/lib/bpf/libbpf.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "6.8"
                },
                {
                  "lessThan": "6.8",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.8.*",
                  "status": "unaffected",
                  "version": "6.8.12",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.9.*",
                  "status": "unaffected",
                  "version": "6.9.3",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.10",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.8.12",
                      "versionStartIncluding": "6.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.9.3",
                      "versionStartIncluding": "6.8",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.10",
                      "versionStartIncluding": "6.8",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibbpf: Prevent null-pointer dereference when prog to load has no BTF\n\nIn bpf_objec_load_prog(), there\u0027s no guarantee that obj-\u003ebtf is non-NULL\nwhen passing it to btf__fd(), and this function does not perform any\ncheck before dereferencing its argument (as bpf_object__btf_fd() used to\ndo). As a consequence, we get segmentation fault errors in bpftool (for\nexample) when trying to load programs that come without BTF information.\n\nv2: Keep btf__fd() in the fix instead of reverting to bpf_object__btf_fd()."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T20:19:20.888Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104"
            },
            {
              "url": "https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0"
            },
            {
              "url": "https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb"
            }
          ],
          "title": "libbpf: Prevent null-pointer dereference when prog to load has no BTF",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-38574",
        "datePublished": "2024-06-19T13:35:39.015Z",
        "dateReserved": "2024-06-18T19:36:34.924Z",
        "dateUpdated": "2026-05-11T20:19:20.888Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • 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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.