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sched_deadline

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The sched_deadline tag on WindowsForum.com covers the Linux SCHED_DEADLINE scheduler, focusing on a specific vulnerability CVE-2026-23371. This bug involves a missing ENQUEUE_REPLENISH flag during priority inheritance de-boosting, which can corrupt bandwidth accounting and trigger kernel warnings like a running_bw underflow. The issue highlights how a deadline-boosted task can lose expected scheduler bookkeeping when demoted to a lower priority class while holding a mutex. Discussions center on the fragility of deadline scheduling under priority inheritance and the kernel's handling of such edge cases.
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    CVE-2026-23371: SCHED_DEADLINE PI De-boost Missing ENQUEUE_REPLENISH Flag

    Linux has assigned CVE-2026-23371 to a scheduler bug in the SCHED_DEADLINE code path, and the issue is notable less for a classic crash-and-burn exploit pattern than for what it reveals about the fragility of deadline scheduling under priority inheritance. The flaw centers on a missing...
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    • cve-2026-23371 linux kernel priority inheritance sched_deadline
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    • Forum: Security Alerts
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