CVE-2026-97410 (GCVE-0-2026-97410)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:03 – Updated: 2026-09-25 12:43
VLAI
Title
netconsole: take target_cleanup_list_lock in drop_netconsole_target()
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().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 97714695ef904a4bdba75ca2f339215c0ae2b1fa , < 84592ee22f7d1583ce33aa733411ff36c7a1c44c (git)
Affected: 97714695ef904a4bdba75ca2f339215c0ae2b1fa , < fe8e6c0a2f28bdab14cdf7eff4dd9755d3793007 (git)
Affected: 97714695ef904a4bdba75ca2f339215c0ae2b1fa , < 91aeb87f052367a5a2743cc93777dfb4386f2f14 (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.111 , ≤ 6.12.* (semver)
Unaffected: 6.18.53 , ≤ 6.18.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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          "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()."
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    "dateReserved": "2026-09-24T14:53:16.867Z",
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            "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()."
          }
        ],
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        "metrics": {},
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}



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