{"id":"CVE-2022-49859","summary":"net: lapbether: fix issue of invalid opcode in lapbeth_open()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lapbether: fix issue of invalid opcode in lapbeth_open()\n\nIf lapb_register() failed when lapb device goes to up for the first time,\nthe NAPI is not disabled. As a result, the invalid opcode issue is\nreported when the lapb device goes to up for the second time.\n\nThe stack info is as follows:\n[ 1958.311422][T11356] kernel BUG at net/core/dev.c:6442!\n[ 1958.312206][T11356] invalid opcode: 0000 [#1] PREEMPT SMP KASAN\n[ 1958.315979][T11356] RIP: 0010:napi_enable+0x16a/0x1f0\n[ 1958.332310][T11356] Call Trace:\n[ 1958.332817][T11356]  \u003cTASK\u003e\n[ 1958.336135][T11356]  lapbeth_open+0x18/0x90\n[ 1958.337446][T11356]  __dev_open+0x258/0x490\n[ 1958.341672][T11356]  __dev_change_flags+0x4d4/0x6a0\n[ 1958.345325][T11356]  dev_change_flags+0x93/0x160\n[ 1958.346027][T11356]  devinet_ioctl+0x1276/0x1bf0\n[ 1958.346738][T11356]  inet_ioctl+0x1c8/0x2d0\n[ 1958.349638][T11356]  sock_ioctl+0x5d1/0x750\n[ 1958.356059][T11356]  __x64_sys_ioctl+0x3ec/0x1790\n[ 1958.365594][T11356]  do_syscall_64+0x35/0x80\n[ 1958.366239][T11356]  entry_SYSCALL_64_after_hwframe+0x46/0xb0\n[ 1958.377381][T11356]  \u003c/TASK\u003e","modified":"2026-04-02T08:27:59.798687Z","published":"2025-05-01T14:10:13.204Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49859.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/3faf7e14ec0c3462c2d747fa6793b8645d1391df"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4689bd3a1b23a1bd917899e63b81bca2ccdfab45"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ed4940050a7ce7fc2ccd51db580ef1ade64290b1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49859.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49859"},{"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":"514e1150da9cd8d7978d990a353636cf1a7a87c2"},{"fixed":"4689bd3a1b23a1bd917899e63b81bca2ccdfab45"},{"fixed":"ed4940050a7ce7fc2ccd51db580ef1ade64290b1"},{"fixed":"3faf7e14ec0c3462c2d747fa6793b8645d1391df"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49859.json"}}],"schema_version":"1.7.5"}