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CVE-2026-68414: Linux, грешка в паметта

7.5

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се от съседна мрежа, при специфични условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката не може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: wifi: cfg80211: cancel sched scan results work on unregister cfg80211_sched_scan_results() can queue rdev->sched_scan_res_wk from a driver result notification while a scheduled scan request is present. The work callback recovers the containing cfg80211_registered_device and then locks the wiphy and walks the scheduled-scan request list. wiphy_unregister() already makes the wiphy unreachable and drains rdev work items before cfg80211_dev_free() can release the object, but it does not drain sched_scan_res_wk. A queued or running result work item can therefore cross the unregister/free boundary and access freed rdev state. The buggy scenario involves two paths, with each column showing the order within that path: scheduled-scan result path: unregister/free path: 1. cfg80211_sched_scan_results() 1. interface teardown stops and queues rdev->sched_scan_res_wk. removes the scheduled scan request. 2. cfg80211_wq starts the work 2. wiphy_unregister() drains other item and recovers rdev. rdev work items. 3. The worker locks rdev->wiphy 3. cfg80211_dev_free() destroys and and walks rdev state. frees rdev. Cancel sched_scan_res_wk in wiphy_unregister() alongside the other rdev work items. cancel_work_sync() removes a pending result notification and waits for an already running callback, so cfg80211_dev_free() cannot free rdev while this work item is still active. Validation reproduced this kernel report: BUG: KASAN: use-after-free in cfg80211_sched_scan_results_wk+0x4a6/0x530 Workqueue: cfg80211 cfg80211_sched_scan_results_wk [cfg80211] Read of size 8 Call trace: dump_stack_lvl+0x66/0xa0 print_report+0xce/0x630 cfg80211_sched_scan_results_wk+0x4a6/0x530 srso_alias_return_thunk+0x5/0xfbef5 __virt_addr_valid+0x224/0x430 kasan_report+0xac/0xe0 lockdep_hardirqs_on_prepare+0xea/0x1a0 process_one_work+0x8d0/0x18f0 (kernel/workqueue.c:3212) l

Засегнати продукти

  • Linux Linux: 807f8a8c300435d5483e8d78df9dcdbc27333166 преди c0fa1f3a4b021a5c6373169fd6c9bb4261d676a0; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди b51b42b974461fd0f688baad85f10e2b8ab215c5; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди 3368457b4871ae8f0f88d19c9a3e6270e850ede6; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди 308ffdf575560d7e7b8b21f1e3ca6276630f73bf; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди 9293574ac208d18c11073538851fb69355beb3b5; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди b119c70b24776c8ab2a2c0515397b3b0ad4e66cd; 807f8a8c300435d5483e8d78df9dcdbc27333166 преди edf0730be33696a1bd142792830d392129e495cc
  • Linux Linux: 3.0; преди 3.0; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 10 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-68414: Linux, грешка в паметта | freedomonline.bg