Vulnerability-Lookup

GHSA-MX88-HH53-RQ74

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

bpf: Disallow interpreter fallback for gotox insn

The interpreter does not recognize the BPF_JMP|BPF_JA|BPF_X insn, which is used for insn_array map. Thereafter, it would hit the BUG_ON() in ___bpf_prog_run() at run time.

[ 2.563726] BPF interpreter: unknown opcode 0d (imm: 0x0) [ 2.564557] ------------[ cut here ]------------ [ 2.565206] kernel BUG at kernel/bpf/core.c:2349! [ 2.565882] Oops: invalid opcode: 0000 [#1] SMP PTI

Set jit_required as true when insn_array map is used in the prog in order to disallow interpreter fallback for gotox insn in core.c::__bpf_prog_select_runtime().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93043"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:57Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for gotox insn\n\nThe interpreter does not recognize the BPF_JMP|BPF_JA|BPF_X insn, which\nis used for insn_array map. Thereafter, it would hit the BUG_ON() in\n___bpf_prog_run() at run time.\n\n[    2.563726] BPF interpreter: unknown opcode 0d (imm: 0x0)\n[    2.564557] ------------[ cut here ]------------\n[    2.565206] kernel BUG at kernel/bpf/core.c:2349!\n[    2.565882] Oops: invalid opcode: 0000 [#1] SMP PTI\n\nSet jit_required as true when insn_array map is used in the prog in\norder to disallow interpreter fallback for gotox insn in\ncore.c::__bpf_prog_select_runtime().",
  "id": "GHSA-mx88-hh53-rq74",
  "modified": "2026-09-17T18:32:07Z",
  "published": "2026-09-17T18:32:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93043"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17da80d0c7b56579476b6644120bcfea778e531a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/905f716362e1186c1a23447ca279e6d21f795cdb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-93043 (GCVE-0-2026-93043)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

bpf: Disallow interpreter fallback for gotox insn

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Disallow interpreter fallback for gotox insn The interpreter does not recognize the BPF_JMP|BPF_JA|BPF_X insn, which is used for insn_array map. Thereafter, it would hit the BUG_ON() in ___bpf_prog_run() at run time. [ 2.563726] BPF interpreter: unknown opcode 0d (imm: 0x0) [ 2.564557] ------------[ cut here ]------------ [ 2.565206] kernel BUG at kernel/bpf/core.c:2349! [ 2.565882] Oops: invalid opcode: 0000 [#1] SMP PTI Set jit_required as true when insn_array map is used in the prog in order to disallow interpreter fallback for gotox insn in core.c::__bpf_prog_select_runtime().

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/17da80d0c7b565794…
https://git.kernel.org/stable/c/905f716362e1186c1…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 493d9e0d608339a32f568504d5fd411a261bb0af , < 17da80d0c7b56579476b6644120bcfea778e531a (git) Affected: 493d9e0d608339a32f568504d5fd411a261bb0af , < 905f716362e1186c1a23447ca279e6d21f795cdb (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "17da80d0c7b56579476b6644120bcfea778e531a",
              "status": "affected",
              "version": "493d9e0d608339a32f568504d5fd411a261bb0af",
              "versionType": "git"
            },
            {
              "lessThan": "905f716362e1186c1a23447ca279e6d21f795cdb",
              "status": "affected",
              "version": "493d9e0d608339a32f568504d5fd411a261bb0af",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Disallow interpreter fallback for gotox insn\n\nThe interpreter does not recognize the BPF_JMP|BPF_JA|BPF_X insn, which\nis used for insn_array map. Thereafter, it would hit the BUG_ON() in\n___bpf_prog_run() at run time.\n\n[    2.563726] BPF interpreter: unknown opcode 0d (imm: 0x0)\n[    2.564557] ------------[ cut here ]------------\n[    2.565206] kernel BUG at kernel/bpf/core.c:2349!\n[    2.565882] Oops: invalid opcode: 0000 [#1] SMP PTI\n\nSet jit_required as true when insn_array map is used in the prog in\norder to disallow interpreter fallback for gotox insn in\ncore.c::__bpf_prog_select_runtime()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:35.602Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/17da80d0c7b56579476b6644120bcfea778e531a"
        },
        {
          "url": "https://git.kernel.org/stable/c/905f716362e1186c1a23447ca279e6d21f795cdb"
        }
      ],
      "title": "bpf: Disallow interpreter fallback for gotox insn",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93043",
    "datePublished": "2026-09-17T16:10:35.602Z",
    "dateReserved": "2026-09-17T15:57:05.657Z",
    "dateUpdated": "2026-09-17T16:10:35.602Z",
    "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.

Detection rules are retrieved from Rulezet.

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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