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

Vulnerability from cvelistv5 – Published: 2025-08-22 13:01 – Updated: 2026-08-05 12:03
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
Assigner
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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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/packet: fix a race in packet_set_ring() and packet_notifier()\n\nWhen packet_set_ring() releases po-\u003ebind_lock, another thread can\nrun packet_notifier() and process an NETDEV_UP event.\n\nThis race and the fix are both similar to that of commit 15fe076edea7\n(\"net/packet: fix a race in packet_bind() and packet_notifier()\").\n\nThere too the packet_notifier NETDEV_UP event managed to run while a\npo-\u003ebind_lock critical section had to be temporarily released. And\nthe fix was similarly to temporarily set po-\u003enum to zero to keep\nthe socket unhooked until the lock is retaken.\n\nThe po-\u003ebind_lock in packet_set_ring and packet_notifier precede the\nintroduction of git history."
          },
          {
            "lang": "es",
            "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."
          }
        ],
        "id": "CVE-2025-38617",
        "lastModified": "2026-07-30T06:23:31.420",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "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",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
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                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 4.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.0,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
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        "published": "2025-08-22T14:15:46.160",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://blog.calif.io/p/a-race-within-a-race-exploiting-cve"
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              {
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                "value": "CWE-362"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T08:59:22+00:00",
      "cve": "CVE-2025-38617",
      "id": "CVE-2025-38617",
      "initial_release_date": "2025-08-22T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "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"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-12T23:51:39Z",
      "cve": "CVE-2025-38617",
      "id": "CVE-2025-38617",
      "initial_release_date": "2025-08-25T23:24:20Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "344",
      "product_status:known_not_affected": "488",
      "product_status:recommended": "913",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38617",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38617.json",
      "version": "73"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.