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CVE-2026-53256: Linux, грешка в паметта

8.0

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, без особени условия, с обикновен потребителски 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: Bluetooth: RFCOMM: hold listener socket in rfcomm_connect_ind() rfcomm_get_sock_by_channel() scans rfcomm_sk_list under the list lock, but returns the selected listener after dropping that lock without taking a reference. rfcomm_connect_ind() then locks the listener, queues a child socket on it, and may notify it after unlocking it. The buggy scenario involves two paths, with each column showing the order within that path: rfcomm_connect_ind(): listener close: 1. Find parent in 1. close() enters rfcomm_get_sock_by_channel() rfcomm_sock_release(). 2. Drop rfcomm_sk_list.lock 2. rfcomm_sock_shutdown() without pinning parent. closes the listener. 3. Call lock_sock(parent) and 3. rfcomm_sock_kill() bt_accept_enqueue(parent, unlinks and puts parent. sk, true). 4. Read parent flags and may 4. parent can be freed. call sk_state_change(). If close wins the race, parent can be freed before rfcomm_connect_ind() reaches lock_sock(), bt_accept_enqueue(), or the deferred-setup callback. Take a reference on the listener before leaving rfcomm_sk_list.lock. After lock_sock() succeeds, recheck that it is still in BT_LISTEN before queueing a child, cache the deferred-setup bit while the parent is locked, and drop the reference after the last parent use. KASAN reported a slab-use-after-free in lock_sock_nested() from rfcomm_connect_ind(), with the freeing stack going through rfcomm_sock_kill() and rfcomm_sock_release().

Засегнати продукти

  • Linux Linux: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди f5ec76bdbeb80f75ad0be204371afffee0f8fac8; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди a07d741c077d4e34b16458241a94d29039386553; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 1f73f92f66251065a5f39b09a47cf05ea14d3107; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди de31973ef00e5aa55496f84cf6a44bb157a34e02; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди b0e33e409715c617e2a20f46f99aa5403a14dfda; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 8802413ce63175fb522a2bd609fb043a3550c720; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 6f4462d12133106460d7c046b95aad2491e3fddf; 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 преди 43c441edacf953b39517a44f5e5e10a93618b226
  • Linux Linux: 2.6.12; преди 2.6.12; 5.10.259 до 5.10.*; 5.15.210 до 5.15.*; 6.1.176 до 6.1.*; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък
  • Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: всички версии

Вид слабост

История

  • 25 юни 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-53256: Linux, грешка в паметта | freedomonline.bg