CVE-2026-97410 (GCVE-0-2026-97410)
Vulnerability from cvelistv5
Published
2026-09-24 16:03
Modified
2026-09-25 12:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: netconsole: take target_cleanup_list_lock in drop_netconsole_target() drop_netconsole_target() unlinks the target while only holding target_list_lock. However, when the underlying interface has been unregistered, netconsole_netdev_event() moves the target from target_list to target_cleanup_list, and netconsole_process_cleanups_core() walks that list under target_cleanup_list_lock only. If a user removes the configfs target at the same time the cleanup worker is iterating target_cleanup_list, list_del() can corrupt the list because the two paths take disjoint locks while operating on the same list node. Acquire target_cleanup_list_lock around the list_del() so the unlink is serialised against netconsole_process_cleanups_core() regardless of which list the target currently belongs to. The state transition that downgrades STATE_DEACTIVATED to STATE_DISABLED is left intact and is performed under the same combined locking, preserving the existing ordering with resume_target().
References
Impacted products
Vendor Product Version
Linux Linux Version: 97714695ef904a4bdba75ca2f339215c0ae2b1fa
Version: 97714695ef904a4bdba75ca2f339215c0ae2b1fa
Version: 97714695ef904a4bdba75ca2f339215c0ae2b1fa
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/netconsole.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "84592ee22f7d1583ce33aa733411ff36c7a1c44c",
              "status": "affected",
              "version": "97714695ef904a4bdba75ca2f339215c0ae2b1fa",
              "versionType": "git"
            },
            {
              "lessThan": "fe8e6c0a2f28bdab14cdf7eff4dd9755d3793007",
              "status": "affected",
              "version": "97714695ef904a4bdba75ca2f339215c0ae2b1fa",
              "versionType": "git"
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            {
              "lessThan": "91aeb87f052367a5a2743cc93777dfb4386f2f14",
              "status": "affected",
              "version": "97714695ef904a4bdba75ca2f339215c0ae2b1fa",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/netconsole.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetconsole: take target_cleanup_list_lock in drop_netconsole_target()\n\ndrop_netconsole_target() unlinks the target while only holding\ntarget_list_lock. However, when the underlying interface has been\nunregistered, netconsole_netdev_event() moves the target from\ntarget_list to target_cleanup_list, and netconsole_process_cleanups_core()\nwalks that list under target_cleanup_list_lock only.\n\nIf a user removes the configfs target at the same time the cleanup\nworker is iterating target_cleanup_list, list_del() can corrupt the list\nbecause the two paths take disjoint locks while operating on the same\nlist node.\n\nAcquire target_cleanup_list_lock around the list_del() so the unlink is\nserialised against netconsole_process_cleanups_core() regardless of\nwhich list the target currently belongs to. The state transition that\ndowngrades STATE_DEACTIVATED to STATE_DISABLED is left intact and is\nperformed under the same combined locking, preserving the existing\nordering with resume_target()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T12:43:44.870Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/84592ee22f7d1583ce33aa733411ff36c7a1c44c"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe8e6c0a2f28bdab14cdf7eff4dd9755d3793007"
        },
        {
          "url": "https://git.kernel.org/stable/c/91aeb87f052367a5a2743cc93777dfb4386f2f14"
        }
      ],
      "title": "netconsole: take target_cleanup_list_lock in drop_netconsole_target()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97410",
    "datePublished": "2026-09-24T16:03:17.074Z",
    "dateReserved": "2026-09-24T14:53:16.867Z",
    "dateUpdated": "2026-09-25T12:43:44.870Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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