Vulnerability-Lookup

GHSA-8279-RM4W-J7MP

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-11 12:33

Details

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

fuse: fix race between interrupt and resend

After commit f8fce75fedf7 ("fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req") the WARN_ON(!list_empty(&req->intr_entry)) in fuse_request_free() still triggers due to the following race:

In request_wait_answer() if (test_bit(FR_SENT, &req->flags)) -> returns true

In fuse_chan_resend() clear_bit(FR_SENT, &req->flags)

In request_wait_answer() queue_interrupt(req)

Fix by:

move clearing FR_SENT inside fpq->lock
move setting FR_PENDING inside fiq->lock
recheck FR_SENT after acquiring fiq->lock in fuse_dev_queue_interrupt()

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80860"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T16:18:15Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nfuse: fix race between interrupt and resend\n\nAfter commit f8fce75fedf7 (\"fuse: clear intr_entry in fuse_resend and\nfuse_remove_pending_req\") the WARN_ON(!list_empty(\u0026req-\u003eintr_entry)) in\nfuse_request_free() still triggers due to the following race:\n\nIn request_wait_answer()\n  if (test_bit(FR_SENT, \u0026req-\u003eflags)) -\u003e returns true\n\nIn fuse_chan_resend()\n  clear_bit(FR_SENT, \u0026req-\u003eflags)\n\nIn request_wait_answer()\n  queue_interrupt(req)\n\nFix by:\n\n - move clearing FR_SENT inside fpq-\u003elock\n\n - move setting FR_PENDING inside fiq-\u003elock\n\n - recheck FR_SENT after acquiring fiq-\u003elock in fuse_dev_queue_interrupt()",
  "id": "GHSA-8279-rm4w-j7mp",
  "modified": "2026-09-11T12:33:24Z",
  "published": "2026-09-04T18:31:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80860"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f930904452945f409eeeb0c9afa08bf27185cb1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26fbe4bc3ef3ab0200407681cbef182af5d151de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed9c881f3b498383f73c42712b359419da42a7b0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80860 (GCVE-0-2026-80860)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:55 – Updated: 2026-09-11 09:57

Title

fuse: fix race between interrupt and resend

Summary

In the Linux kernel, the following vulnerability has been resolved: fuse: fix race between interrupt and resend After commit f8fce75fedf7 ("fuse: clear intr_entry in fuse_resend and fuse_remove_pending_req") the WARN_ON(!list_empty(&req->intr_entry)) in fuse_request_free() still triggers due to the following race: In request_wait_answer() if (test_bit(FR_SENT, &req->flags)) -> returns true In fuse_chan_resend() clear_bit(FR_SENT, &req->flags) In request_wait_answer() queue_interrupt(req) Fix by: - move clearing FR_SENT inside fpq->lock - move setting FR_PENDING inside fiq->lock - recheck FR_SENT after acquiring fiq->lock in fuse_dev_queue_interrupt()

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/0f930904452945f40…
https://git.kernel.org/stable/c/26fbe4bc3ef3ab020…
https://git.kernel.org/stable/c/ed9c881f3b498383f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 7366e6f4d2b4c7002b13fb01219e83679dad4127 , < 0f930904452945f409eeeb0c9afa08bf27185cb1 (git) Affected: f8fce75fedf73ac72aa09163deb8f4291fdcaad2 , < 26fbe4bc3ef3ab0200407681cbef182af5d151de (git) Affected: f8fce75fedf73ac72aa09163deb8f4291fdcaad2 , < ed9c881f3b498383f73c42712b359419da42a7b0 (git) Affected: 1d8ecd0cd696a5df0b2f72046a4ccee5d2a8ec2c (git) Affected: 893479015cb6442fd389d3b553ab3036c9541715 (git) Affected: 6.18.39 , < 6.18.51 (semver) Affected: 6.12.96 , < 6.13 (semver) Affected: 7.1.4 , < 7.2 (semver)
Linux	Linux	Affected: 7.2 Unaffected: 0 , < 7.2 (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.3 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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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.

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