CVE-2026-43115: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: srcu: Use irq_work to start GP in tiny SRCU Tiny SRCU's srcu_gp_start_if_needed() directly calls schedule_work(), which acquires the workqueue pool->lock. This causes a lockdep splat when call_srcu() is called with a scheduler lock held, due to: call_srcu() [holding pi_lock] srcu_gp_start_if_needed() schedule_work() -> pool->lock workqueue_init() / create_worker() [holding pool->lock] wake_up_process() -> try_to_wake_up() -> pi_lock Also add irq_work_sync() to cleanup_srcu_struct() to prevent a use-after-free if a queued irq_work fires after cleanup begins. Tested with rcutorture SRCU-T and no lockdep warnings. [ Thanks to Boqun for similar fix in patch "rcu: Use an intermediate irq_work to start process_srcu()" ]

Засегнати продукти

• Linux Linux: d8be81735aa89413b333de488251f0e64e2be591 преди 28768bc7ea0b13f558a70f63cc3cfcd32d55d488; d8be81735aa89413b333de488251f0e64e2be591 преди bb37286db65368cb72ba8757ad86299c4e4a73fc; d8be81735aa89413b333de488251f0e64e2be591 преди a6fc88b22bc8d12ad52e8412c667ec0f5bf055af
• Linux Linux: 4.12; преди 4.12; 6.18.57 до 6.18.*; 6.19.14 до 6.19.*; от 7.0 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-43115
• https://nvd.nist.gov/vuln/detail/CVE-2026-43115
• https://git.kernel.org/stable/c/28768bc7ea0b13f558a70f63cc3cfcd32d55d488
• https://git.kernel.org/stable/c/bb37286db65368cb72ba8757ad86299c4e4a73fc
• https://git.kernel.org/stable/c/a6fc88b22bc8d12ad52e8412c667ec0f5bf055af