CVE-2025-38617 (GCVE-0-2025-38617)

Vulnerability from cvelistv5 – Published: 2025-08-22 13:01 – Updated: 2026-10-15 22:02
VLAI
Title
net/packet: fix a race in packet_set_ring() and packet_notifier()
Summary
In the Linux kernel, the following vulnerability has been resolved: net/packet: fix a race in packet_set_ring() and packet_notifier() When packet_set_ring() releases po->bind_lock, another thread can run packet_notifier() and process an NETDEV_UP event. This race and the fix are both similar to that of commit 15fe076edea7 ("net/packet: fix a race in packet_bind() and packet_notifier()"). There too the packet_notifier NETDEV_UP event managed to run while a po->bind_lock critical section had to be temporarily released. And the fix was similarly to temporarily set po->num to zero to keep the socket unhooked until the lock is retaken. The po->bind_lock in packet_set_ring and packet_notifier precede the introduction of git history.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:52 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7056 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 18f13f2a83eb81be349a9757ba2141ff1da9ad73 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7da733f117533e9b2ebbd530a22ae4028713955c (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ba2257034755ae773722f15f4c3ad1dcdad15ca9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7de07705007c7e34995a5599aaab1d23e762d7ca (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 88caf46db8239e6471413d28aabaa6b8bd552805 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f2e8fcfd2b1bc754920108b7f2cd75082c5a18df (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e50ccfaca9e3c671cae917dcb994831a859cf588 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f1791fd7b845bea0ce9674fcf2febee7bc87a893 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 01d3c8417b9c1b884a8a981a3b886da556512f36 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.297 , ≤ 5.4.* (semver)
Unaffected: 5.10.241 , ≤ 5.10.* (semver)
Unaffected: 5.15.190 , ≤ 5.15.* (semver)
Unaffected: 6.1.148 , ≤ 6.1.* (semver)
Unaffected: 6.6.102 , ≤ 6.6.* (semver)
Unaffected: 6.12.42 , ≤ 6.12.* (semver)
Unaffected: 6.15.10 , ≤ 6.15.* (semver)
Unaffected: 6.16.1 , ≤ 6.16.* (semver)
Unaffected: 6.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net/packet: correcci\u00f3n de una carrera en packet_set_ring() y packet_notifier(). Cuando packet_set_ring() libera po-\u0026gt;bind_lock, otro hilo puede ejecutar packet_notifier() y procesar un evento NETDEV_UP. Esta carrera y la correcci\u00f3n son similares a las del commit 15fe076edea7 (\"net/packet: correcci\u00f3n de una carrera en packet_bind() y packet_notifier()\"). En este caso, el evento NETDEV_UP de packet_notifier tambi\u00e9n se ejecut\u00f3 mientras una secci\u00f3n cr\u00edtica de po-\u0026gt;bind_lock deb\u00eda liberarse temporalmente. La correcci\u00f3n tambi\u00e9n consist\u00eda en establecer temporalmente po-\u0026gt;num en cero para mantener el socket desconectado hasta que se recupere el bloqueo. El po-\u0026gt;bind_lock en packet_set_ring y packet_notifier precede a la introducci\u00f3n del historial de Git."
          }
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        "id": "CVE-2025-38617",
        "lastModified": "2026-10-15T22:18:47.480",
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      "current_release_date": "2026-10-15T14:41:06+00:00",
      "cve": "CVE-2025-38617",
      "id": "CVE-2025-38617",
      "initial_release_date": "2025-08-22T00:00:00+00:00",
      "product_status:known_affected": "275",
      "source": "Red Hat CSAF VEX",
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      "title": "kernel: net/packet: fix a race in packet_set_ring() and packet_notifier()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38617.json",
      "version": "3"
    }
  }
}



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