CVE - CVE-2021-47368

CVE-ID
CVE-2021-47368	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28 URL:https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28 MISC:https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b URL:https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b MISC:https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270 URL:https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270 MISC:https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90 URL:https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90
Assigning CNA
kernel.org
Date Record Created
20240521	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240521)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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