Vulnerability-Lookup

GHSA-6CQ8-8CQV-FH6C

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 15:31

Details

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

net: do not pass flow_id to set_rps_cpu()

Blamed commit made the assumption that the RPS table for each receive queue would have the same size, and that it would not change.

Compute flow_id in set_rps_cpu(), do not assume we can use the value computed by get_rps_cpu(). Otherwise we risk out-of-bound access and/or crashes.

Severity ?

9.8 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43208"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:40Z",
    "severity": "CRITICAL"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not pass flow_id to set_rps_cpu()\n\nBlamed commit made the assumption that the RPS table for each receive\nqueue would have the same size, and that it would not change.\n\nCompute flow_id in set_rps_cpu(), do not assume we can use the value\ncomputed by get_rps_cpu(). Otherwise we risk out-of-bound access\nand/or crashes.",
  "id": "GHSA-6cq8-8cqv-fh6c",
  "modified": "2026-05-08T15:31:17Z",
  "published": "2026-05-06T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43208"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5455a232edea6b946b99449f15ca771a8874a5a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a8a9fac9efa6423fd74938b940cb7d731780718"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43208 (GCVE-0-2026-43208)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:28 – Updated: 2026-05-11 22:20

Title

net: do not pass flow_id to set_rps_cpu()

Summary

In the Linux kernel, the following vulnerability has been resolved: net: do not pass flow_id to set_rps_cpu() Blamed commit made the assumption that the RPS table for each receive queue would have the same size, and that it would not change. Compute flow_id in set_rps_cpu(), do not assume we can use the value computed by get_rps_cpu(). Otherwise we risk out-of-bound access and/or crashes.

Severity ?

9.8 (Critical)


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

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/5455a232edea6b946…
https://git.kernel.org/stable/c/ed712dc0d64dee5f0…
https://git.kernel.org/stable/c/8a8a9fac9efa6423f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 48aa30443e52c9666d5cd5e67532e475f212337e , < 5455a232edea6b946b99449f15ca771a8874a5a6 (git) Affected: 48aa30443e52c9666d5cd5e67532e475f212337e , < ed712dc0d64dee5f0d05e4d8ca57711f8a9c850c (git) Affected: 48aa30443e52c9666d5cd5e67532e475f212337e , < 8a8a9fac9efa6423fd74938b940cb7d731780718 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.16 , ≤ 6.18.* (semver) Unaffected: 6.19.6 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/dev.c"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
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            },
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          "versions": [
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              "status": "affected",
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            },
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              "version": "0",
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            },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not pass flow_id to set_rps_cpu()\n\nBlamed commit made the assumption that the RPS table for each receive\nqueue would have the same size, and that it would not change.\n\nCompute flow_id in set_rps_cpu(), do not assume we can use the value\ncomputed by get_rps_cpu(). Otherwise we risk out-of-bound access\nand/or crashes."
        }
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-6CQ8-8CQV-FH6C

CVE-2026-43208 (GCVE-0-2026-43208)

Tags

Sightings

Nomenclature