{"schema_version":"1.9.0","id":"CVE-2022-50271","published":"2025-09-15T14:21:07.563Z","modified":"2026-08-12T03:51:29.079318456Z","related":["SUSE-SU-2025:03613-1","SUSE-SU-2025:03614-1","SUSE-SU-2025:03615-1","SUSE-SU-2025:03626-1","SUSE-SU-2025:03628-1","SUSE-SU-2025:3716-1","SUSE-SU-2025:3761-1"],"summary":"vhost/vsock: Use kvmalloc/kvfree for larger packets.","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost/vsock: Use kvmalloc/kvfree for larger packets.\n\nWhen copying a large file over sftp over vsock, data size is usually 32kB,\nand kmalloc seems to fail to try to allocate 32 32kB regions.\n\n vhost-5837: page allocation failure: order:4, mode:0x24040c0\n Call Trace:\n  [<ffffffffb6a0df64>] dump_stack+0x97/0xdb\n  [<ffffffffb68d6aed>] warn_alloc_failed+0x10f/0x138\n  [<ffffffffb68d868a>] ? __alloc_pages_direct_compact+0x38/0xc8\n  [<ffffffffb664619f>] __alloc_pages_nodemask+0x84c/0x90d\n  [<ffffffffb6646e56>] alloc_kmem_pages+0x17/0x19\n  [<ffffffffb6653a26>] kmalloc_order_trace+0x2b/0xdb\n  [<ffffffffb66682f3>] __kmalloc+0x177/0x1f7\n  [<ffffffffb66e0d94>] ? copy_from_iter+0x8d/0x31d\n  [<ffffffffc0689ab7>] vhost_vsock_handle_tx_kick+0x1fa/0x301 [vhost_vsock]\n  [<ffffffffc06828d9>] vhost_worker+0xf7/0x157 [vhost]\n  [<ffffffffb683ddce>] kthread+0xfd/0x105\n  [<ffffffffc06827e2>] ? vhost_dev_set_owner+0x22e/0x22e [vhost]\n  [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3\n  [<ffffffffb6eb332e>] ret_from_fork+0x4e/0x80\n  [<ffffffffb683dcd1>] ? flush_kthread_worker+0xf3/0xf3\n\nWork around by doing kvmalloc instead.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"433fc58e6bf2c8bd97e57153ed28e64fd78207b8"},{"fixed":"0d720c3f0a03e97867deab7e480ba3d3e19837ba"},{"fixed":"7aac8c63f604e6a6a46560c0f0188cd0332cf320"},{"fixed":"e6d0152c95108651f1880c1ddfab47cb9e3e62d0"},{"fixed":"b4a5905fd2ef841cd61e969ea692c213c2e5c1f7"},{"fixed":"e28a4e7f0296824c61a81e7fd54ab48bad3e75ad"},{"fixed":"a99fc6d818161d6f1ff3307de8bf5237f6cc34d8"},{"fixed":"36c9f340c60413e28f980c0224c4e9d35851526b"},{"fixed":"0e3f72931fc47bb81686020cc643cde5d9cd0bb8"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50271.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.8.0"},{"fixed":"4.14.296"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.15.0"},{"fixed":"4.19.262"}]},{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.4.220"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.5.0"},{"fixed":"5.10.150"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.75"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.20.0"},{"fixed":"6.0.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50271.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0d720c3f0a03e97867deab7e480ba3d3e19837ba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0e3f72931fc47bb81686020cc643cde5d9cd0bb8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/36c9f340c60413e28f980c0224c4e9d35851526b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7aac8c63f604e6a6a46560c0f0188cd0332cf320"},{"type":"WEB","url":"https://git.kernel.org/stable/c/a99fc6d818161d6f1ff3307de8bf5237f6cc34d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b4a5905fd2ef841cd61e969ea692c213c2e5c1f7"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e28a4e7f0296824c61a81e7fd54ab48bad3e75ad"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e6d0152c95108651f1880c1ddfab47cb9e3e62d0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50271.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50271"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50271.json"}}