{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2021-47368", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nenetc: Fix illegal access when reading affinity_hint\n\nirq_set_affinity_hit() stores a reference to the cpumask_t\nparameter in the irq descriptor, and that reference can be\naccessed later from irq_affinity_hint_proc_show(). Since\nthe cpu_mask parameter passed to irq_set_affinity_hit() has\nonly temporary storage (it's on the stack memory), later\naccesses to it are illegal. Thus reads from the corresponding\nprocfs affinity_hint file can result in paging request oops.\n\nThe issue is fixed by the get_cpu_mask() helper, which provides\na permanent storage for the cpumask_t parameter." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "d4fd0404c1c9", "version_value": "4c4c3052911b" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "5.1", "status": "affected" }, { "version": "0", "lessThan": "5.1", "status": "unaffected", "versionType": "semver" }, { "version": "5.4.150", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.10.70", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.14.9", "lessThanOrEqual": "5.14.*", "status": "unaffected", "versionType": "semver" }, { "version": "5.15", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4c4c3052911b577920353a7646e4883d5da40c28" }, { "url": "https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/6c3f1b741c6c2914ea120e3a5790d3e900152f7b" }, { "url": "https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/6f329d9da2a5ae032fcde800a99b118124ed5270" }, { "url": "https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/7237a494decfa17d0b9d0076e6cee3235719de90" } ] }, "generator": { "engine": "bippy-9e1c9544281a" } }