{"id":"CVE-2024-38385","summary":"genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ngenirq/irqdesc: Prevent use-after-free in irq_find_at_or_after()\n\nirq_find_at_or_after() dereferences the interrupt descriptor which is\nreturned by mt_find() while neither holding sparse_irq_lock nor RCU read\nlock, which means the descriptor can be freed between mt_find() and the\ndereference:\n\n    CPU0                            CPU1\n    desc = mt_find()\n                                    delayed_free_desc(desc)\n    irq_desc_get_irq(desc)\n\nThe use-after-free is reported by KASAN:\n\n    Call trace:\n     irq_get_next_irq+0x58/0x84\n     show_stat+0x638/0x824\n     seq_read_iter+0x158/0x4ec\n     proc_reg_read_iter+0x94/0x12c\n     vfs_read+0x1e0/0x2c8\n\n    Freed by task 4471:\n     slab_free_freelist_hook+0x174/0x1e0\n     __kmem_cache_free+0xa4/0x1dc\n     kfree+0x64/0x128\n     irq_kobj_release+0x28/0x3c\n     kobject_put+0xcc/0x1e0\n     delayed_free_desc+0x14/0x2c\n     rcu_do_batch+0x214/0x720\n\nGuard the access with a RCU read lock section.","modified":"2026-04-16T04:39:46.474899533Z","published":"2024-06-25T14:22:37.560Z","related":["SUSE-SU-2024:2571-1","SUSE-SU-2024:2896-1","SUSE-SU-2024:2973-1","SUSE-SU-2025:20008-1","SUSE-SU-2025:20028-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38385.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1c7891812d85500ae2ca4051fa5683fcf29930d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b84a8aba806261d2f759ccedf4a2a6a80a5e55ba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d084aa022f84319f8079e30882cbcbc026af9f21"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/38xxx/CVE-2024-38385.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38385"},{"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":"721255b9826bd11c7a38b585905fc2dd0fb94e52"},{"fixed":"1c7891812d85500ae2ca4051fa5683fcf29930d8"},{"fixed":"d084aa022f84319f8079e30882cbcbc026af9f21"},{"fixed":"b84a8aba806261d2f759ccedf4a2a6a80a5e55ba"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-38385.json"}}],"schema_version":"1.7.5"}