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CVE-2021-47368

גבוהה 7.1

תיאור (מקור, אנגלית)

In the Linux kernel, the following vulnerability has been resolved: enetc: Fix illegal access when reading affinity_hint irq_set_affinity_hit() stores a reference to the cpumask_t parameter in the irq descriptor, and that reference can be accessed later from irq_affinity_hint_proc_show(). Since the cpu_mask parameter passed to irq_set_affinity_hit() has only temporary storage (it's on the stack memory), later accesses to it are illegal. Thus reads from the corresponding procfs affinity_hint file can result in paging request oops. The issue is fixed by the get_cpu_mask() helper, which provides a permanent storage for the cpumask_t parameter.

מדדים

CVSS 3.1
7.1 (HIGH) מקור הציון: CNA CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
EPSS — סבירות ניצול
1% (אחוזון 000) נכון ל-6/8/2026
CWE
CWE-400

מוצרים מושפעים

linux: linux kernel

קישורים