{"cve":"CVE-2022-49301","nvd":{"published":"2025-02-26T07:01:06.923","modified":"2026-06-17T05:17:38.917","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8712: fix uninit-value in usb_read8() and friends\n\nWhen r8712_usbctrl_vendorreq() returns negative, 'data' in\nusb_read{8,16,32} will not be initialized.\n\nBUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:643 [inline]\nBUG: KMSAN: uninit-value in string+0x4ec/0x6f0 lib/vsprintf.c:725\n string_nocheck lib/vsprintf.c:643 [inline]\n string+0x4ec/0x6f0 lib/vsprintf.c:725\n vsnprintf+0x2222/0x3650 lib/vsprintf.c:2806\n va_format lib/vsprintf.c:1704 [inline]\n pointer+0x18e6/0x1f70 lib/vsprintf.c:2443\n vsnprintf+0x1a9b/0x3650 lib/vsprintf.c:2810\n vprintk_store+0x537/0x2150 kernel/printk/printk.c:2158\n vprintk_emit+0x28b/0xab0 kernel/printk/printk.c:2256\n dev_vprintk_emit+0x5ef/0x6d0 drivers/base/core.c:4604\n dev_printk_emit+0x1dd/0x21f drivers/base/core.c:4615\n __dev_printk+0x3be/0x440 drivers/base/core.c:4627\n _dev_info+0x1ea/0x22f drivers/base/core.c:4673\n r871xu_drv_init+0x1929/0x3070 drivers/staging/rtl8712/usb_intf.c:401\n usb_probe_interface+0xf19/0x1600 drivers/usb/core/driver.c:396\n really_probe+0x6c7/0x1350 drivers/base/dd.c:621\n __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752\n driver_probe_device drivers/base/dd.c:782 [inline]\n __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899\n bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427\n __device_attach+0x593/0x8e0 drivers/base/dd.c:970\n device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017\n bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487\n device_add+0x1fff/0x26e0 drivers/base/core.c:3405\n usb_set_configuration+0x37e9/0x3ed0 drivers/usb/core/message.c:2170\n usb_generic_driver_probe+0x13c/0x300 drivers/usb/core/generic.c:238\n usb_probe_device+0x309/0x570 drivers/usb/core/driver.c:293\n really_probe+0x6c7/0x1350 drivers/base/dd.c:621\n __driver_probe_device+0x3e9/0x530 drivers/base/dd.c:752\n driver_probe_device drivers/base/dd.c:782 [inline]\n __device_attach_driver+0x79f/0x1120 drivers/base/dd.c:899\n bus_for_each_drv+0x2d6/0x3f0 drivers/base/bus.c:427\n __device_attach+0x593/0x8e0 drivers/base/dd.c:970\n device_initial_probe+0x4a/0x60 drivers/base/dd.c:1017\n bus_probe_device+0x17b/0x3e0 drivers/base/bus.c:487\n device_add+0x1fff/0x26e0 drivers/base/core.c:3405\n usb_new_device+0x1b91/0x2950 drivers/usb/core/hub.c:2566\n hub_port_connect drivers/usb/core/hub.c:5363 [inline]\n hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]\n port_event drivers/usb/core/hub.c:5665 [inline]\n hub_event+0x58e3/0x89e0 drivers/usb/core/hub.c:5747\n process_one_work+0xdb6/0x1820 kernel/workqueue.c:2289\n worker_thread+0x10d0/0x2240 kernel/workqueue.c:2436\n kthread+0x3c7/0x500 kernel/kthread.c:376\n ret_from_fork+0x1f/0x30\n\nLocal variable data created at:\n usb_read8+0x5d/0x130 drivers/staging/rtl8712/usb_ops.c:33\n r8712_read8+0xa5/0xd0 drivers/staging/rtl8712/rtl8712_io.c:29\n\nKMSAN: uninit-value in r871xu_drv_init\nhttps://syzkaller.appspot.com/bug?id=3cd92b1d85428b128503bfa7a250294c9ae00bd8","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-908"],"references":["https://git.kernel.org/stable/c/33ef21d55418ab6a62a63fd550b2dbe297433372","https://git.kernel.org/stable/c/58762f1c63c75cbe1dc393eed3c9cf8e38310ca1","https://git.kernel.org/stable/c/95b0f54f8a898072a2810c05fab34d971f23a612","https://git.kernel.org/stable/c/d1b57669732d09da7e13ef86d058dab0cd57f6e0","https://git.kernel.org/stable/c/d7ed3c85da0b230bcdf5329acfe012ed093f3daa"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:59:48.811064707+00:00"},"epss":{"cve":"CVE-2022-49301","score":0.00262,"percentile":0.18052,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}