Vulnerability-Lookup

GHSA-94WW-55M5-GMRG

Vulnerability from github – Published: 2026-03-25 12:30 – Updated: 2026-05-26 15:32

Details

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

i40e: Fix preempt count leak in napi poll tracepoint

Using get_cpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes put_cpu() to undo it:

softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101?

This clearly has seen a lot of testing in the last 3+ years...

Use smp_processor_id() instead.

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-2026-23313"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-25T11:16:27Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix preempt count leak in napi poll tracepoint\n\nUsing get_cpu() in the tracepoint assignment causes an obvious preempt\ncount leak because nothing invokes put_cpu() to undo it:\n\n  softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101?\n\nThis clearly has seen a lot of testing in the last 3+ years...\n\nUse smp_processor_id() instead.",
  "id": "GHSA-94ww-55m5-gmrg",
  "modified": "2026-05-26T15:32:06Z",
  "published": "2026-03-25T12:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23313"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e0f091821571f0da387462803ee42f0bb157582"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7e91827e1cf89cd34ad11dc8f8c010b70ab786e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7"
    }
  ],
  "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-2026-23313 (GCVE-0-2026-23313)

Vulnerability from cvelistv5 – Published: 2026-03-25 10:27 – Updated: 2026-05-11 22:04

Title

i40e: Fix preempt count leak in napi poll tracepoint

Summary

In the Linux kernel, the following vulnerability has been resolved: i40e: Fix preempt count leak in napi poll tracepoint Using get_cpu() in the tracepoint assignment causes an obvious preempt count leak because nothing invokes put_cpu() to undo it: softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101? This clearly has seen a lot of testing in the last 3+ years... Use smp_processor_id() instead.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/fa5d5baf67f619c7a…
https://git.kernel.org/stable/c/b7e91827e1cf89cd3…
https://git.kernel.org/stable/c/9e0f091821571f0da…
https://git.kernel.org/stable/c/dca4ea596a3b0a1b8…
https://git.kernel.org/stable/c/4b3d54a85bd37ebf2…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6d4d584a7ea8fc8d2be77545cb503118c193738a , < fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7 (git) Affected: 6d4d584a7ea8fc8d2be77545cb503118c193738a , < b7e91827e1cf89cd34ad11dc8f8c010b70ab786e (git) Affected: 6d4d584a7ea8fc8d2be77545cb503118c193738a , < 9e0f091821571f0da387462803ee42f0bb157582 (git) Affected: 6d4d584a7ea8fc8d2be77545cb503118c193738a , < dca4ea596a3b0a1b82bc1d9f3e4d88bd9ad9561f (git) Affected: 6d4d584a7ea8fc8d2be77545cb503118c193738a , < 4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9 (git)
Linux	Linux	Affected: 6.2 Unaffected: 0 , < 6.2 (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.77 , ≤ 6.12.* (semver) Unaffected: 6.18.17 , ≤ 6.18.* (semver) Unaffected: 6.19.7 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/i40e/i40e_trace.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "fa5d5baf67f619c7aa70697a194b5a9edd9f5bb7",
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              "version": "6d4d584a7ea8fc8d2be77545cb503118c193738a",
              "versionType": "git"
            },
            {
              "lessThan": "b7e91827e1cf89cd34ad11dc8f8c010b70ab786e",
              "status": "affected",
              "version": "6d4d584a7ea8fc8d2be77545cb503118c193738a",
              "versionType": "git"
            },
            {
              "lessThan": "9e0f091821571f0da387462803ee42f0bb157582",
              "status": "affected",
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              "versionType": "git"
            },
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              "versionType": "git"
            },
            {
              "lessThan": "4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9",
              "status": "affected",
              "version": "6d4d584a7ea8fc8d2be77545cb503118c193738a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/i40e/i40e_trace.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "lessThan": "6.2",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.77",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "negate": false,
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix preempt count leak in napi poll tracepoint\n\nUsing get_cpu() in the tracepoint assignment causes an obvious preempt\ncount leak because nothing invokes put_cpu() to undo it:\n\n  softirq: huh, entered softirq 3 NET_RX with preempt_count 00000100, exited with 00000101?\n\nThis clearly has seen a lot of testing in the last 3+ years...\n\nUse smp_processor_id() instead."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:04:28.296Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/4b3d54a85bd37ebf2d9836f0d0de775c0ff21af9"
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      ],
      "title": "i40e: Fix preempt count leak in napi poll tracepoint",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23313",
    "datePublished": "2026-03-25T10:27:08.686Z",
    "dateReserved": "2026-01-13T15:37:45.994Z",
    "dateUpdated": "2026-05-11T22:04:28.296Z",
    "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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