Vulnerability-Lookup

GHSA-6C2W-77G9-CCCC

Vulnerability from github – Published: 2026-01-14 15:33 – Updated: 2026-03-25 21:30

Details

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

LoongArch: BPF: Sign extend kfunc call arguments

The kfunc calls are native calls so they should follow LoongArch calling conventions. Sign extend its arguments properly to avoid kernel panic. This is done by adding a new emit_abi_ext() helper. The emit_abi_ext() helper performs extension in place meaning a value already store in the target register (Note: this is different from the existing sign_extend() helper and thus we can't reuse it).

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-71129"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-01-14T15:16:02Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Sign extend kfunc call arguments\n\nThe kfunc calls are native calls so they should follow LoongArch calling\nconventions. Sign extend its arguments properly to avoid kernel panic.\nThis is done by adding a new emit_abi_ext() helper. The emit_abi_ext()\nhelper performs extension in place meaning a value already store in the\ntarget register (Note: this is different from the existing sign_extend()\nhelper and thus we can\u0027t reuse it).",
  "id": "GHSA-6c2w-77g9-cccc",
  "modified": "2026-03-25T21:30:22Z",
  "published": "2026-01-14T15:33:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-71129"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d666db731e95890e0eda7ea61bc925fd2be90c6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/321993a874f571a94b5a596f1132f798c663b56e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fd43edf357a3a1f5ed1c4bf450b60001c9091c39"
    }
  ],
  "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-2025-71129 (GCVE-0-2025-71129)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:07 – Updated: 2026-05-11 21:55

Title

LoongArch: BPF: Sign extend kfunc call arguments

Summary

In the Linux kernel, the following vulnerability has been resolved: LoongArch: BPF: Sign extend kfunc call arguments The kfunc calls are native calls so they should follow LoongArch calling conventions. Sign extend its arguments properly to avoid kernel panic. This is done by adding a new emit_abi_ext() helper. The emit_abi_ext() helper performs extension in place meaning a value already store in the target register (Note: this is different from the existing sign_extend() helper and thus we can't reuse it).

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

4 references

URL	Tags
https://git.kernel.org/stable/c/fd43edf357a3a1f5e…
https://git.kernel.org/stable/c/0d666db731e95890e…
https://git.kernel.org/stable/c/321993a874f571a94…
https://git.kernel.org/stable/c/3f5a238f24d7b75f9…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5dc615520c4dfb358245680f1904bad61116648e , < fd43edf357a3a1f5ed1c4bf450b60001c9091c39 (git) Affected: 5dc615520c4dfb358245680f1904bad61116648e , < 0d666db731e95890e0eda7ea61bc925fd2be90c6 (git) Affected: 5dc615520c4dfb358245680f1904bad61116648e , < 321993a874f571a94b5a596f1132f798c663b56e (git) Affected: 5dc615520c4dfb358245680f1904bad61116648e , < 3f5a238f24d7b75f9efe324d3539ad388f58536e (git)
Linux	Linux	Affected: 6.1 Unaffected: 0 , < 6.1 (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.64 , ≤ 6.12.* (semver) Unaffected: 6.18.4 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/net/bpf_jit.c",
            "arch/loongarch/net/bpf_jit.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fd43edf357a3a1f5ed1c4bf450b60001c9091c39",
              "status": "affected",
              "version": "5dc615520c4dfb358245680f1904bad61116648e",
              "versionType": "git"
            },
            {
              "lessThan": "0d666db731e95890e0eda7ea61bc925fd2be90c6",
              "status": "affected",
              "version": "5dc615520c4dfb358245680f1904bad61116648e",
              "versionType": "git"
            },
            {
              "lessThan": "321993a874f571a94b5a596f1132f798c663b56e",
              "status": "affected",
              "version": "5dc615520c4dfb358245680f1904bad61116648e",
              "versionType": "git"
            },
            {
              "lessThan": "3f5a238f24d7b75f9efe324d3539ad388f58536e",
              "status": "affected",
              "version": "5dc615520c4dfb358245680f1904bad61116648e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/loongarch/net/bpf_jit.c",
            "arch/loongarch/net/bpf_jit.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1"
            },
            {
              "lessThan": "6.1",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.64",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.120",
                  "versionStartIncluding": "6.1",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                }
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              "negate": false,
              "operator": "OR"
            }
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: BPF: Sign extend kfunc call arguments\n\nThe kfunc calls are native calls so they should follow LoongArch calling\nconventions. Sign extend its arguments properly to avoid kernel panic.\nThis is done by adding a new emit_abi_ext() helper. The emit_abi_ext()\nhelper performs extension in place meaning a value already store in the\ntarget register (Note: this is different from the existing sign_extend()\nhelper and thus we can\u0027t reuse it)."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T21:55:32.205Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/3f5a238f24d7b75f9efe324d3539ad388f58536e"
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      ],
      "title": "LoongArch: BPF: Sign extend kfunc call arguments",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71129",
    "datePublished": "2026-01-14T15:07:45.786Z",
    "dateReserved": "2026-01-13T15:30:19.655Z",
    "dateUpdated": "2026-05-11T21:55:32.205Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
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GHSA-6C2W-77G9-CCCC

CVE-2025-71129 (GCVE-0-2025-71129)

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