CVE-2025-38717 (GCVE-0-2025-38717)

Vulnerability from cvelistv5 – Published: 2025-09-04 15:33 – Updated: 2025-09-29 05:56
VLAI?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: kcm: Fix race condition in kcm_unattach() syzbot found a race condition when kcm_unattach(psock) and kcm_release(kcm) are executed at the same time. kcm_unattach() is missing a check of the flag kcm->tx_stopped before calling queue_work(). If the kcm has a reserved psock, kcm_unattach() might get executed between cancel_work_sync() and unreserve_psock() in kcm_release(), requeuing kcm->tx_work right before kcm gets freed in kcm_done(). Remove kcm->tx_stopped and replace it by the less error-prone disable_work_sync().
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 , < c0bffbc92a1ca3960fb9cdb8e9f75a68468eb308 (git)
Affected: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 , < 7275dc3bb8f91b23125ff3f47b6529935cf46152 (git)
Affected: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 , < 798733ee5d5788b12e8a52db1519abc17e826f69 (git)
Affected: ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 , < 52565a935213cd6a8662ddb8efe5b4219343a25d (git)
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    Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 6.12.43 , ≤ 6.12.* (semver)
Unaffected: 6.15.11 , ≤ 6.15.* (semver)
Unaffected: 6.16.2 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "include/net/kcm.h",
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: kcm: Fix race condition in kcm_unattach()\n\nsyzbot found a race condition when kcm_unattach(psock)\nand kcm_release(kcm) are executed at the same time.\n\nkcm_unattach() is missing a check of the flag\nkcm-\u003etx_stopped before calling queue_work().\n\nIf the kcm has a reserved psock, kcm_unattach() might get executed\nbetween cancel_work_sync() and unreserve_psock() in kcm_release(),\nrequeuing kcm-\u003etx_work right before kcm gets freed in kcm_done().\n\nRemove kcm-\u003etx_stopped and replace it by the less\nerror-prone disable_work_sync()."
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    "datePublished": "2025-09-04T15:33:11.686Z",
    "dateReserved": "2025-04-16T04:51:24.033Z",
    "dateUpdated": "2025-09-29T05:56:40.882Z",
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  }
}


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Sightings

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  • 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.