Vulnerability-Lookup

GHSA-R6VX-43G9-HVQX

Vulnerability from github – Published: 2026-07-01 15:35 – Updated: 2026-07-01 15:35

Details

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

debugobjects: Don't call fill_pool() in early boot hardirq context

When booting a debug PREEMPT_RT kernel on an ARM64 system, a "inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage" lockdep warning message was reported to the console.

During early boot, interrupts are enabled before the scheduler is enabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can fire and in the hard interrupt context handler attempt to fill the pool

This can lead to a deadlock when the interrupt occurred when the interrupt hits a region which holds a lock that is required to be taken in the allocation path.

Add a new can_fill_pool() helper and reorder the exception rule and forbid this scenario by excluding allocations from hard interrupt context.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53326"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-01T14:16:40Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndebugobjects: Don\u0027t call fill_pool() in early boot hardirq context\n\nWhen booting a debug PREEMPT_RT kernel on an ARM64 system, a \"inconsistent\n{HARDIRQ-ON-W} -\u003e {IN-HARDIRQ-W} usage\" lockdep warning message was\nreported to the console.\n\nDuring early boot, interrupts are enabled before the scheduler is\nenabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can\nfire and in the hard interrupt context handler attempt to fill the pool\n\nThis can lead to a deadlock when the interrupt occurred when the interrupt\nhits a region which holds a lock that is required to be taken in the\nallocation path.\n\nAdd a new can_fill_pool() helper and reorder the exception rule and forbid\nthis scenario by excluding allocations from hard interrupt context.",
  "id": "GHSA-r6vx-43g9-hvqx",
  "modified": "2026-07-01T15:35:18Z",
  "published": "2026-07-01T15:35:18Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53326"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d046ae106255cba5eb83b23f78ee93f3620247d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44b8b03a9fb5c575548fc72c674653d6baba142a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7bc71bdb1c1526c7f02a6adab324394ff1327b0a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53326 (GCVE-0-2026-53326)

Vulnerability from cvelistv5 – Published: 2026-07-01 13:32 – Updated: 2026-07-01 13:32

Title

debugobjects: Don't call fill_pool() in early boot hardirq context

Summary

In the Linux kernel, the following vulnerability has been resolved: debugobjects: Don't call fill_pool() in early boot hardirq context When booting a debug PREEMPT_RT kernel on an ARM64 system, a "inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage" lockdep warning message was reported to the console. During early boot, interrupts are enabled before the scheduler is enabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can fire and in the hard interrupt context handler attempt to fill the pool This can lead to a deadlock when the interrupt occurred when the interrupt hits a region which holds a lock that is required to be taken in the allocation path. Add a new can_fill_pool() helper and reorder the exception rule and forbid this scenario by excluding allocations from hard interrupt context.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/44b8b03a9fb5c5755…
https://git.kernel.org/stable/c/7bc71bdb1c1526c7f…
https://git.kernel.org/stable/c/0d046ae106255cba5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a460935022f512e167b4c5d4c12d85f89ba6aabd , < 44b8b03a9fb5c575548fc72c674653d6baba142a (git) Affected: 06e0ae988f6e3499785c407429953ade19c1096b , < 7bc71bdb1c1526c7f02a6adab324394ff1327b0a (git) Affected: 06e0ae988f6e3499785c407429953ade19c1096b , < 0d046ae106255cba5eb83b23f78ee93f3620247d (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "lib/debugobjects.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "44b8b03a9fb5c575548fc72c674653d6baba142a",
              "status": "affected",
              "version": "a460935022f512e167b4c5d4c12d85f89ba6aabd",
              "versionType": "git"
            },
            {
              "lessThan": "7bc71bdb1c1526c7f02a6adab324394ff1327b0a",
              "status": "affected",
              "version": "06e0ae988f6e3499785c407429953ade19c1096b",
              "versionType": "git"
            },
            {
              "lessThan": "0d046ae106255cba5eb83b23f78ee93f3620247d",
              "status": "affected",
              "version": "06e0ae988f6e3499785c407429953ade19c1096b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
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          "versions": [
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              "version": "6.19"
            },
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              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndebugobjects: Don\u0027t call fill_pool() in early boot hardirq context\n\nWhen booting a debug PREEMPT_RT kernel on an ARM64 system, a \"inconsistent\n{HARDIRQ-ON-W} -\u003e {IN-HARDIRQ-W} usage\" lockdep warning message was\nreported to the console.\n\nDuring early boot, interrupts are enabled before the scheduler is\nenabled. In this window (before SYSTEM_SCHEDULING is set) interrupts can\nfire and in the hard interrupt context handler attempt to fill the pool\n\nThis can lead to a deadlock when the interrupt occurred when the interrupt\nhits a region which holds a lock that is required to be taken in the\nallocation path.\n\nAdd a new can_fill_pool() helper and reorder the exception rule and forbid\nthis scenario by excluding allocations from hard interrupt context."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-01T13:32:12.924Z",
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        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/0d046ae106255cba5eb83b23f78ee93f3620247d"
        }
      ],
      "title": "debugobjects: Don\u0027t call fill_pool() in early boot hardirq context",
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    "cveId": "CVE-2026-53326",
    "datePublished": "2026-07-01T13:32:12.924Z",
    "dateReserved": "2026-06-09T07:44:35.398Z",
    "dateUpdated": "2026-07-01T13:32:12.924Z",
    "state": "PUBLISHED"
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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-R6VX-43G9-HVQX

CVE-2026-53326 (GCVE-0-2026-53326)

Tags

Sightings

Nomenclature