Vulnerability-Lookup

GHSA-XMV6-X39J-72GG

Vulnerability from github – Published: 2024-11-26 00:33 – Updated: 2025-11-03 21:31

Details

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

bpf: Check validity of link->type in bpf_link_show_fdinfo()

If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access.

To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.

Severity

7.1 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-53099"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-11-25T22:15:16Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Check validity of link-\u003etype in bpf_link_show_fdinfo()\n\nIf a newly-added link type doesn\u0027t invoke BPF_LINK_TYPE(), accessing\nbpf_link_type_strs[link-\u003etype] may result in an out-of-bounds access.\n\nTo spot such missed invocations early in the future, checking the\nvalidity of link-\u003etype in bpf_link_show_fdinfo() and emitting a warning\nwhen such invocations are missed.",
  "id": "GHSA-xmv6-x39j-72gg",
  "modified": "2025-11-03T21:31:39Z",
  "published": "2024-11-26T00:33:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-53099"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e8074bb33d18f56af30a0252cb3606d27eb1c13"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/79f87a6ec39fb5968049a6775a528bf58b25c20a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8421d4c8762bd022cb491f2f0f7019ef51b4f0a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b3eb1b6a9f745d6941b345f0fae014dc8bb06d36"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-53099 (GCVE-0-2024-53099)

Vulnerability from cvelistv5 – Published: 2024-11-25 21:21 – Updated: 2026-08-05 11:43

Title

bpf: Check validity of link->type in bpf_link_show_fdinfo()

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Check validity of link->type in bpf_link_show_fdinfo() If a newly-added link type doesn't invoke BPF_LINK_TYPE(), accessing bpf_link_type_strs[link->type] may result in an out-of-bounds access. To spot such missed invocations early in the future, checking the validity of link->type in bpf_link_show_fdinfo() and emitting a warning when such invocations are missed.

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/79f87a6ec39fb5968…
https://git.kernel.org/stable/c/24fec234d2ba9ca3c…
https://git.kernel.org/stable/c/4e8074bb33d18f56a…
https://git.kernel.org/stable/c/d5092b0a1aaf35d77…
https://git.kernel.org/stable/c/b3eb1b6a9f745d694…
https://git.kernel.org/stable/c/8421d4c8762bd022c…
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < 79f87a6ec39fb5968049a6775a528bf58b25c20a (git) Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < 24fec234d2ba9ca3c14e545ebe3fd6dcb47f074d (git) Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < 4e8074bb33d18f56af30a0252cb3606d27eb1c13 (git) Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < d5092b0a1aaf35d77ebd8d33384d7930bec5cb5d (git) Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < b3eb1b6a9f745d6941b345f0fae014dc8bb06d36 (git) Affected: 70ed506c3bbcfa846d4636b23051ca79fa4781f7 , < 8421d4c8762bd022cb491f2f0f7019ef51b4f0a7 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 5.10.233 , ≤ 5.10.* (semver) Unaffected: 5.15.176 , ≤ 5.15.* (semver) Unaffected: 6.1.123 , ≤ 6.1.* (semver) Unaffected: 6.6.62 , ≤ 6.6.* (semver) Unaffected: 6.11.9 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix)

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    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-03T20:45:50.627Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"
          },
          {
            "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html"
          }
        ],
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      "cpeApplicability": [
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              "lang": "en",
              "value": "AV:L - Triggering requires the local `bpf()` syscall to create a link and a local `read()` of `/proc/\u003cpid\u003e/fdinfo/\u003cfd\u003e`; there is no remote or adjacent-network path into `bpf_link_show_fdinfo()`. Per kernel guidance, BPF subsystem bugs are Local.\nAC:L - The out-of-bounds slot and its contents are fixed for a given kernel build, so the attacker simply creates the link and reads its fdinfo \u2014 no race to win, no memory grooming, and no condition outside attacker control. Success is deterministic and repeatable.\nPR:L - A local unprivileged account suffices: link creation needs only CAP_BPF/CAP_NET_ADMIN, which are commonly delegated to non-root containers and services and are unnecessary altogether on the many embedded/Android/distro configs with `unprivileged_bpf_disabled=0`. Reading a bpffs-pinned or inherited link fd\u0027s fdinfo requires no capability at all beyond owning the task.\nUI:N - The attacker performs both steps \u2014 creating the bpf_link and reading its fdinfo \u2014 entirely within its own process. No victim action or privileged helper is involved.\nS:U - The out-of-bounds read and the resulting disclosure or fault are confined to the kernel of the running system, the same security authority that manages the attacking process. No VM, IOMMU, or sandbox boundary is crossed.\nC:H - The OOB-loaded `const char *` is dereferenced by `seq_printf(\"%s\")` and copied verbatim into the fdinfo output read by userspace, leaking an unbounded NUL-terminated run of kernel `.rodata`/`.data` from an address the kernel never validated. The leak is not bounded to a few bytes and can disclose kernel pointers usable for KASLR defeat.\nI:N - The defect is strictly a read: the out-of-bounds pointer is loaded and dereferenced but never written back, and the only write is into the length-checked seq_file buffer. No memory corruption, write primitive, or control-flow hijack arises from it.\nA:H - When the out-of-bounds slot does not hold a valid kernel address, `vsnprintf` dereferences it and faults inside the procfs read path, producing a kernel oops. The added `WARN_ONCE` also panics the machine under `panic_on_warn`, which is standard on hardened and automotive deployments."
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    "dateUpdated": "2026-08-05T11:43:41.204Z",
    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-XMV6-X39J-72GG

CVE-2024-53099 (GCVE-0-2024-53099)

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