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CVE-2023-53731 (GCVE-0-2023-53731)

Vulnerability from cvelistv5 – Published: 2025-10-22 13:23 – Updated: 2026-05-23 15:30
VLAI
Title
netlink: fix potential deadlock in netlink_set_err()
Summary
In the Linux kernel, the following vulnerability has been resolved: netlink: fix potential deadlock in netlink_set_err() syzbot reported a possible deadlock in netlink_set_err() [1] A similar issue was fixed in commit 1d482e666b8e ("netlink: disable IRQs for netlink_lock_table()") in netlink_lock_table() This patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump() which were not covered by cited commit. [1] WARNING: possible irq lock inversion dependency detected 6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted syz-executor.2/23011 just changed the state of lock: ffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612 but this lock was taken by another, SOFTIRQ-safe lock in the past: (&local->queue_stop_reason_lock){..-.}-{2:2} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(nl_table_lock); local_irq_disable(); lock(&local->queue_stop_reason_lock); lock(nl_table_lock); <Interrupt> lock(&local->queue_stop_reason_lock); *** DEADLOCK ***
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 82b2ea5f904b3826934df4a00f3b8806272185f6 , < c09e8e3f7fd432984bf5422302b093d2371dfc48 (git)
Affected: 59fba11d649854134c75ad88c8adafa9304ac419 , < 4b9adb8d4a62ff7608d4a7d4eb42036a88f30980 (git)
Affected: 21df0c2e7d195de4a3c650de9361b3037fa6c59a , < 8f6652ed2ad98fe6d13b903483d9257762ab2ec6 (git)
Affected: 1d6d43d4805da9b3fa0f5841e8b1083c89868f35 , < cde7b90e0539a3b11da377e463dfd2288a162dbf (git)
Affected: 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d , < a641240b7e071c5538dc0e7894ece833fce459dd (git)
Affected: 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d , < 61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464 (git)
Affected: 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d , < eb8e27c8fa9397b4a7b181c48fa58157dbe9902e (git)
Affected: 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d , < 1556ba034b95cfd4f75ea93c1a2679ae0444bba1 (git)
Affected: 1d482e666b8e74c7555dbdfbfb77205eeed3ff2d , < 8d61f926d42045961e6b65191c09e3678d86a9cf (git)
Affected: 5f155c4046200f067b1dc3140ea99ef56e4e0b74 (git)
Affected: a8e9111a8625dd11e70edd61f7a1ccd26c041442 (git)
Affected: 76cc8e04f38c2bbfcba07f62864a011f142bd40c (git)
Affected: 4.14.237 , < 4.14.322 (semver)
Affected: 4.19.195 , < 4.19.291 (semver)
Affected: 5.4.126 , < 5.4.251 (semver)
Affected: 5.10.44 , < 5.10.188 (semver)
Affected: 4.4.273 , < 4.5 (semver)
Affected: 4.9.273 , < 4.10 (semver)
Affected: 5.12.11 , < 5.13 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 4.14.322 , ≤ 4.14.* (semver)
Unaffected: 4.19.291 , ≤ 4.19.* (semver)
Unaffected: 5.4.251 , ≤ 5.4.* (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.3.13 , ≤ 6.3.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: fix potential deadlock in netlink_set_err()\n\nsyzbot reported a possible deadlock in netlink_set_err() [1]\n\nA similar issue was fixed in commit 1d482e666b8e (\"netlink: disable IRQs\nfor netlink_lock_table()\") in netlink_lock_table()\n\nThis patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump()\nwhich were not covered by cited commit.\n\n[1]\n\nWARNING: possible irq lock inversion dependency detected\n6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted\n\nsyz-executor.2/23011 just changed the state of lock:\nffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612\nbut this lock was taken by another, SOFTIRQ-safe lock in the past:\n (\u0026local-\u003equeue_stop_reason_lock){..-.}-{2:2}\n\nand interrupts could create inverse lock ordering between them.\n\nother info that might help us debug this:\n Possible interrupt unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(nl_table_lock);\n                               local_irq_disable();\n                               lock(\u0026local-\u003equeue_stop_reason_lock);\n                               lock(nl_table_lock);\n  \u003cInterrupt\u003e\n    lock(\u0026local-\u003equeue_stop_reason_lock);\n\n *** DEADLOCK ***"
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/c09e8e3f7fd432984bf5422302b093d2371dfc48"
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          "url": "https://git.kernel.org/stable/c/4b9adb8d4a62ff7608d4a7d4eb42036a88f30980"
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      "title": "netlink: fix potential deadlock in netlink_set_err()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53731",
    "datePublished": "2025-10-22T13:23:59.055Z",
    "dateReserved": "2025-10-22T13:21:37.349Z",
    "dateUpdated": "2026-05-23T15:30:38.411Z",
    "state": "PUBLISHED"
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      "date": "2026-09-18",
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      "percentile": "0.12336"
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                    "status": "unaffected",
                    "version": "5.15.121",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.39",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.3.*",
                    "status": "unaffected",
                    "version": "6.3.13",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.4.*",
                    "status": "unaffected",
                    "version": "6.4.4",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.5",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetlink: fix potential deadlock in netlink_set_err()\n\nsyzbot reported a possible deadlock in netlink_set_err() [1]\n\nA similar issue was fixed in commit 1d482e666b8e (\"netlink: disable IRQs\nfor netlink_lock_table()\") in netlink_lock_table()\n\nThis patch adds IRQ safety to netlink_set_err() and __netlink_diag_dump()\nwhich were not covered by cited commit.\n\n[1]\n\nWARNING: possible irq lock inversion dependency detected\n6.4.0-rc6-syzkaller-00240-g4e9f0ec38852 #0 Not tainted\n\nsyz-executor.2/23011 just changed the state of lock:\nffffffff8e1a7a58 (nl_table_lock){.+.?}-{2:2}, at: netlink_set_err+0x2e/0x3a0 net/netlink/af_netlink.c:1612\nbut this lock was taken by another, SOFTIRQ-safe lock in the past:\n (\u0026local-\u003equeue_stop_reason_lock){..-.}-{2:2}\n\nand interrupts could create inverse lock ordering between them.\n\nother info that might help us debug this:\n Possible interrupt unsafe locking scenario:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(nl_table_lock);\n                               local_irq_disable();\n                               lock(\u0026local-\u003equeue_stop_reason_lock);\n                               lock(nl_table_lock);\n  \u003cInterrupt\u003e\n    lock(\u0026local-\u003equeue_stop_reason_lock);\n\n *** DEADLOCK ***"
          }
        ],
        "id": "CVE-2023-53731",
        "lastModified": "2026-06-17T06:45:58.170",
        "metrics": {},
        "published": "2025-10-22T14:15:48.423",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/1556ba034b95cfd4f75ea93c1a2679ae0444bba1"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4b9adb8d4a62ff7608d4a7d4eb42036a88f30980"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/61ffe8b1ee084e5c82a4e4bbf9e7b68e0c06e464"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8d61f926d42045961e6b65191c09e3678d86a9cf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/8f6652ed2ad98fe6d13b903483d9257762ab2ec6"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a641240b7e071c5538dc0e7894ece833fce459dd"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c09e8e3f7fd432984bf5422302b093d2371dfc48"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/cde7b90e0539a3b11da377e463dfd2288a162dbf"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/eb8e27c8fa9397b4a7b181c48fa58157dbe9902e"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:21:34+00:00",
      "cve": "CVE-2023-53731",
      "id": "CVE-2023-53731",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:fixed": "280",
      "product_status:known_affected": "112",
      "product_status:known_not_affected": "84",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Kernel: Denial of Service due to a Netlink subsystem deadlock",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53731.json",
      "version": "3"
    }
  }
}



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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.