{"id":"AZL-56187","summary":"CVE-2024-47141 affecting package kernel 5.15.200.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\npinmux: Use sequential access to access desc-\u003epinmux data\n\nWhen two client of the same gpio call pinctrl_select_state() for the\nsame functionality, we are seeing NULL pointer issue while accessing\ndesc-\u003emux_owner.\n\nLet's say two processes A, B executing in pin_request() for the same pin\nand process A updates the desc-\u003emux_usecount but not yet updated the\ndesc-\u003emux_owner while process B see the desc-\u003emux_usecount which got\nupdated by A path and further executes strcmp and while accessing\ndesc-\u003emux_owner it crashes with NULL pointer.\n\nSerialize the access to mux related setting with a mutex lock.\n\n\tcpu0 (process A)\t\t\tcpu1(process B)\n\npinctrl_select_state() {\t\t  pinctrl_select_state() {\n  pin_request() {\t\t\t\tpin_request() {\n  ...\n\t\t\t\t\t\t ....\n    } else {\n         desc-\u003emux_usecount++;\n    \t\t\t\t\t\tdesc-\u003emux_usecount && strcmp(desc-\u003emux_owner, owner)) {\n\n         if (desc-\u003emux_usecount \u003e 1)\n               return 0;\n         desc-\u003emux_owner = owner;\n\n  }\t\t\t\t\t\t}","modified":"2026-04-21T04:36:04.695965Z","published":"2025-01-11T13:15:21Z","upstream":["CVE-2024-47141"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-47141"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.15.200.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-56187.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}