In the Linux kernel, the following vulnerability has been resolved: rcu: Fix buffer overflow in print_cpu_stall_info() The rcuc-starvation output from print_cpu_stall_info() might overflow the buffer if there is a huge difference in jiffies difference. The situation might seem improbable, but computers sometimes get very confused about time, which can result in full-sized integers, and, in this case, buffer overflow. Also, the unsigned jiffies difference is printed using %ld, which is normally for signed integers. This is intentional for debugging purposes, but it is not obvious from the code. This commit therefore changes sprintf() to snprintf() and adds a clarifying comment about intention of %ld format. Found by Linux Verification Center (linuxtesting.org) with SVACE.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-06-19T13:37:35.142Z

Updated: 2024-08-02T04:12:25.929Z

Reserved: 2024-06-18T19:36:34.924Z

Link: CVE-2024-38576

cve-icon Vulnrichment

Updated: 2024-06-20T15:40:41.143Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-06-19T14:15:17.700

Modified: 2024-07-03T02:05:14.340

Link: CVE-2024-38576

cve-icon Redhat

Severity : Low

Publid Date: 2024-06-19T00:00:00Z

Links: CVE-2024-38576 - Bugzilla