Threats Tagged 'ghsa-9h35-hqff-9v3w'
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Threats Tagged 'ghsa-9h35-hqff-9v3w'
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GHSA-9h35-hqff-9v3wCVE-2026-52946 0 A deadlock vulnerability exists in the Linux kernel's fasync signaling mechanism involving unsafe lock order between SOFTIRQ-safe and SOFTIRQ-unsafe contexts. This occurs when process groups receive signals via send_sigio() or send_sigurg(), potentially causing a system hang. The issue arises from the use of read_lock(&tasklist_lock) in softirq context, which conflicts with write_lock attempts in process context, leading to deadlock. The vulnerability can be triggered remotely via TCP URG packets, resulting in a denial of service. The fix involves replacing the tasklist_lock with rcu_read_lock() for safe traversal, eliminating the deadlock condition. Join the discussion | GCVE Database | 06/24/2026, 18:32:41 UTC Added: 06/29/2026, 22:10:57 UTC |
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