github - ghsa-cv67-23pp-jfh2

ghsa-cv67-23pp-jfh2

Vulnerability from github

Published

2024-06-19 15:30

Modified

2025-01-31 15:30

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:

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().

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{
   affected: [],
   aliases: [
      "CVE-2024-38574",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-476",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-06-19T14:15:17Z",
      severity: "MODERATE",
   },
   details: "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's no guarantee that obj->btf 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().",
   id: "GHSA-cv67-23pp-jfh2",
   modified: "2025-01-31T15:30:42Z",
   published: "2024-06-19T15:30:53Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-38574",
      },
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   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-2024-38574

Vulnerability from cvelistv5

Published

2024-06-19 13:35

Modified

2024-12-19 09:04

Severity ?

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().

References

▼	URL	Tags
	https://git.kernel.org/stable/c/ef80b59acfa4dee4b5eaccb15572b69248831104
	https://git.kernel.org/stable/c/1fd91360a75833b7110af9834ae26c977e1273e0
	https://git.kernel.org/stable/c/9bf48fa19a4b1d186e08b20bf7e5de26a15644fb

Impacted products

Vendor

Product

Version

▼

Linux

Version: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e
Version: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e
Version: df7c3f7d3a3ddab31ca8cfa9b86a8729ec43fd2e

Linux

Version: 6.8

Show details on NVD website

JSON

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All sightings related to this event Export sightings related to this event

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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