Vulnerability-Lookup

GHSA-RV8G-6VR7-CV64

Vulnerability from github – Published: 2025-09-16 15:32 – Updated: 2025-12-02 21:31

Details

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

bnxt_en: Fix memory corruption when FW resources change during ifdown

bnxt_set_dflt_rings() assumes that it is always called before any TC has been created. So it doesn't take bp->num_tc into account and assumes that it is always 0 or 1.

In the FW resource or capability change scenario, the FW will return flags in bnxt_hwrm_if_change() that will cause the driver to reinitialize and call bnxt_cancel_reservations(). This will lead to bnxt_init_dflt_ring_mode() calling bnxt_set_dflt_rings() and bp->num_tc may be greater than 1. This will cause bp->tx_ring[] to be sized too small and cause memory corruption in bnxt_alloc_cp_rings().

Fix it by properly scaling the TX rings by bp->num_tc in the code paths mentioned above. Add 2 helper functions to determine bp->tx_nr_rings and bp->tx_nr_rings_per_tc.

Severity ?

7.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2025-39810"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-09-16T13:15:53Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: Fix memory corruption when FW resources change during ifdown\n\nbnxt_set_dflt_rings() assumes that it is always called before any TC has\nbeen created.  So it doesn\u0027t take bp-\u003enum_tc into account and assumes\nthat it is always 0 or 1.\n\nIn the FW resource or capability change scenario, the FW will return\nflags in bnxt_hwrm_if_change() that will cause the driver to\nreinitialize and call bnxt_cancel_reservations().  This will lead to\nbnxt_init_dflt_ring_mode() calling bnxt_set_dflt_rings() and bp-\u003enum_tc\nmay be greater than 1.  This will cause bp-\u003etx_ring[] to be sized too\nsmall and cause memory corruption in bnxt_alloc_cp_rings().\n\nFix it by properly scaling the TX rings by bp-\u003enum_tc in the code\npaths mentioned above.  Add 2 helper functions to determine\nbp-\u003etx_nr_rings and bp-\u003etx_nr_rings_per_tc.",
  "id": "GHSA-rv8g-6vr7-cv64",
  "modified": "2025-12-02T21:31:27Z",
  "published": "2025-09-16T15:32:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39810"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2747328ba2714f1a7454208dbbc1dc0631990b4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9ab6a9950f152e094395d2e3967f889857daa185"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d00e98977ef519280b075d783653e2c492fffbb6"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-39810 (GCVE-0-2025-39810)

Vulnerability from cvelistv5 – Published: 2025-09-16 13:00 – Updated: 2026-01-14 18:22

Title

bnxt_en: Fix memory corruption when FW resources change during ifdown

Summary

In the Linux kernel, the following vulnerability has been resolved: bnxt_en: Fix memory corruption when FW resources change during ifdown bnxt_set_dflt_rings() assumes that it is always called before any TC has been created. So it doesn't take bp->num_tc into account and assumes that it is always 0 or 1. In the FW resource or capability change scenario, the FW will return flags in bnxt_hwrm_if_change() that will cause the driver to reinitialize and call bnxt_cancel_reservations(). This will lead to bnxt_init_dflt_ring_mode() calling bnxt_set_dflt_rings() and bp->num_tc may be greater than 1. This will cause bp->tx_ring[] to be sized too small and cause memory corruption in bnxt_alloc_cp_rings(). Fix it by properly scaling the TX rings by bp->num_tc in the code paths mentioned above. Add 2 helper functions to determine bp->tx_nr_rings and bp->tx_nr_rings_per_tc.

Severity ?

7.8 (High)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/d00e98977ef519280…
	https://git.kernel.org/stable/c/9ab6a9950f152e094…
	https://git.kernel.org/stable/c/2747328ba2714f1a7…

Impacted products

Vendor

Product

Version

Linux

Affected: ec5d31e3c15d5233b491400133c67f78a320062c , < d00e98977ef519280b075d783653e2c492fffbb6 (git)
Affected: ec5d31e3c15d5233b491400133c67f78a320062c , < 9ab6a9950f152e094395d2e3967f889857daa185 (git)
Affected: ec5d31e3c15d5233b491400133c67f78a320062c , < 2747328ba2714f1a7454208dbbc1dc0631990b4a (git)

Linux

Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 6.12.45 , ≤ 6.12.* (semver)
Unaffected: 6.16.5 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)

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JSON

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              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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    "cna": {
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          "product": "Linux",
          "programFiles": [
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        {
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          "versions": [
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              "version": "0",
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    "datePublished": "2025-09-16T13:00:12.677Z",
    "dateReserved": "2025-04-16T07:20:57.137Z",
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    "state": "PUBLISHED"
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}

Sightings

Author	Source	Type	Date

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-RV8G-6VR7-CV64

CVE-2025-39810 (GCVE-0-2025-39810)

Tags

Sightings

Nomenclature