{"id":"CVE-2024-42254","summary":"io_uring: fix error pbuf checking","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: fix error pbuf checking\n\nSyz reports a problem, which boils down to NULL vs IS_ERR inconsistent\nerror handling in io_alloc_pbuf_ring().\n\nKASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\nRIP: 0010:__io_remove_buffers+0xac/0x700 io_uring/kbuf.c:341\nCall Trace:\n \u003cTASK\u003e\n io_put_bl io_uring/kbuf.c:378 [inline]\n io_destroy_buffers+0x14e/0x490 io_uring/kbuf.c:392\n io_ring_ctx_free+0xa00/0x1070 io_uring/io_uring.c:2613\n io_ring_exit_work+0x80f/0x8a0 io_uring/io_uring.c:2844\n process_one_work kernel/workqueue.c:3231 [inline]\n process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312\n worker_thread+0x86d/0xd40 kernel/workqueue.c:3390\n kthread+0x2f0/0x390 kernel/kthread.c:389\n ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147\n ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244","modified":"2026-07-15T01:49:20.602267224Z","published":"2024-08-08T08:49:14.289Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42254.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/68d19af95a353f5e2b021602180b65b303eba99d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/78aefac7efdffddf7889405b7c08e6e0f030fa35"},{"type":"WEB","url":"https://git.kernel.org/stable/c/bcc87d978b834c298bbdd9c52454c5d0a946e97e"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42254.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42254"},{"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":"46b1b3d81a7e99574e1a2f914086bc2fe382d79d"},{"fixed":"78aefac7efdffddf7889405b7c08e6e0f030fa35"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"87585b05757dc70545efb434669708d276125559"},{"fixed":"68d19af95a353f5e2b021602180b65b303eba99d"},{"fixed":"bcc87d978b834c298bbdd9c52454c5d0a946e97e"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42254.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.10.0"},{"fixed":"6.10.1"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-42254.json"}}],"schema_version":"1.7.5"}