{"id":"CVE-2026-31480","summary":"tracing: Fix potential deadlock in cpu hotplug with osnoise","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Fix potential deadlock in cpu hotplug with osnoise\n\nThe following sequence may leads deadlock in cpu hotplug:\n\n    task1        task2        task3\n    -----        -----        -----\n\n mutex_lock(&interface_lock)\n\n            [CPU GOING OFFLINE]\n\n            cpus_write_lock();\n            osnoise_cpu_die();\n              kthread_stop(task3);\n                wait_for_completion();\n\n                      osnoise_sleep();\n                        mutex_lock(&interface_lock);\n\n cpus_read_lock();\n\n [DEAD LOCK]\n\nFix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).","modified":"2026-07-09T18:30:47.174848856Z","published":"2026-04-22T13:54:07.566Z","related":["SUSE-SU-2026:22043-1","SUSE-SU-2026:22048-1","SUSE-SU-2026:22076-1","SUSE-SU-2026:22087-1","SUSE-SU-2026:22108-1","SUSE-SU-2026:22137-1","SUSE-SU-2026:22433-1","SUSE-SU-2026:22458-1","SUSE-SU-2026:2482-1","SUSE-SU-2026:2591-1","openSUSE-SU-2026:20912-1"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31480.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831"},{"type":"WEB","url":"https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa"},{"type":"WEB","url":"https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31480.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31480"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"bce29ac9ce0bb0b0b146b687ab978378c21e9078"},{"fixed":"cf929c21eeed5bd39873fb14bfdfff963fa6f1da"},{"fixed":"7aa095ce7d224308cb6979956f0de8607df93d4f"},{"fixed":"ef41a85a55022e27cdaebf22a6676910b66f65aa"},{"fixed":"03474a01c199de17a8e2d39b51df6beb9c76e831"},{"fixed":"f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7"},{"fixed":"7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f"},{"fixed":"1f9885732248d22f788e4992c739a98c88ab8a55"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31480.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.14.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.168"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.131"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.80"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.21"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.11"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31480.json"}}],"schema_version":"1.7.5"}