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CVE-2024-56640: Linux, грешка в паметта

9.8

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 по мрежата, без особени 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: net/smc: fix LGR and link use-after-free issue We encountered a LGR/link use-after-free issue, which manifested as the LGR/link refcnt reaching 0 early and entering the clear process, making resource access unsafe. refcount_t: addition on 0; use-after-free. WARNING: CPU: 14 PID: 107447 at lib/refcount.c:25 refcount_warn_saturate+0x9c/0x140 Workqueue: events smc_lgr_terminate_work [smc] Call trace: refcount_warn_saturate+0x9c/0x140 __smc_lgr_terminate.part.45+0x2a8/0x370 [smc] smc_lgr_terminate_work+0x28/0x30 [smc] process_one_work+0x1b8/0x420 worker_thread+0x158/0x510 kthread+0x114/0x118 or refcount_t: underflow; use-after-free. WARNING: CPU: 6 PID: 93140 at lib/refcount.c:28 refcount_warn_saturate+0xf0/0x140 Workqueue: smc_hs_wq smc_listen_work [smc] Call trace: refcount_warn_saturate+0xf0/0x140 smcr_link_put+0x1cc/0x1d8 [smc] smc_conn_free+0x110/0x1b0 [smc] smc_conn_abort+0x50/0x60 [smc] smc_listen_find_device+0x75c/0x790 [smc] smc_listen_work+0x368/0x8a0 [smc] process_one_work+0x1b8/0x420 worker_thread+0x158/0x510 kthread+0x114/0x118 It is caused by repeated release of LGR/link refcnt. One suspect is that smc_conn_free() is called repeatedly because some smc_conn_free() from server listening path are not protected by sock lock. e.g. Calls under socklock | smc_listen_work ------------------------------------------------------- lock_sock(sk) | smc_conn_abort smc_conn_free | \- smc_conn_free \- smcr_link_put | \- smcr_link_put (duplicated) release_sock(sk) So here add sock lock protection in smc_listen_work() path, making it exclusive with other connection operations.

Засегнати продукти

  • Linux Linux: 3b2dec2603d5b06ad3af71c1164ca0b92df3d2a8 преди f502a88fdd415647a1f2dc45fac71b9c522a052b; 3b2dec2603d5b06ad3af71c1164ca0b92df3d2a8 преди 0cf598548a6c36d90681d53c6b77d52363f2f295; 3b2dec2603d5b06ad3af71c1164ca0b92df3d2a8 преди 673d606683ac70bc074ca6676b938bff18635226; 3b2dec2603d5b06ad3af71c1164ca0b92df3d2a8 преди 6f0ae06a234a78ae137064f2c89135ac078a00eb; 3b2dec2603d5b06ad3af71c1164ca0b92df3d2a8 преди 2c7f14ed9c19ec0f149479d1c2842ec1f9bf76d7
  • Linux Linux: 4.18; преди 4.18; 5.15.174 до 5.15.*; 6.1.120 до 6.1.*; 6.6.66 до 6.6.*; 6.12.5 до 6.12.*; 6.13 до *

Вид слабост

История

  • 27 декември 2024 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2024-56640: Linux, грешка в паметта | freedomonline.bg