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CVE-2024-26686 is an improper resource-locking vulnerability in the Linux kernel's procfs do_task_stat() function. When NR_CPUS threads concurrently collect statistics for a process with NR_THREADS threads, lock_task_sighand() can cause spinning with interrupts disabled for O(NR_CPUS * NR_THREADS) time. Excessive contention in the siglock-protected statistics collection can trigger a hard lockup and render the kernel unresponsive.
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A local denial-of-service vulnerability in the Linux kernel's fs/proc do_task_stat() implementation. Concurrent calls can cause excessive spinning with interrupts disabled, resulting in a hard lockup. The reference assigns CVSS v3 severity 5.5 (Medium), requiring low privileges and affecting availability without confidentiality or integrity impact. Google COS kernel packages are addressed by updating to version 18613.164.4 or later.
A Linux kernel procfs task-statistics synchronization issue fixed by using sig->stats_lock while gathering thread and child statistics.
Linux kernel procfs task-statistics synchronization issue addressed by using sig->stats_lock when collecting thread and child statistics.
Linux kernel procfs task-statistics locking issue.
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Every observed campaign linking this CVE to a named adversary.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.