{"id":"CVE-2022-50272","summary":"media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer()\n\nWei Chen reports a kernel bug as blew:\n\ngeneral protection fault, probably for non-canonical address\nKASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]\n...\nCall Trace:\n\u003cTASK\u003e\n__i2c_transfer+0x77e/0x1930 drivers/i2c/i2c-core-base.c:2109\ni2c_transfer+0x1d5/0x3d0 drivers/i2c/i2c-core-base.c:2170\ni2cdev_ioctl_rdwr+0x393/0x660 drivers/i2c/i2c-dev.c:297\ni2cdev_ioctl+0x75d/0x9f0 drivers/i2c/i2c-dev.c:458\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:870 [inline]\n__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7fd834a8bded\n\nIn az6027_i2c_xfer(), if msg[i].addr is 0x99,\na null-ptr-deref will caused when accessing msg[i].buf.\nFor msg[i].len is 0 and msg[i].buf is null.\n\nFix this by checking msg[i].len in az6027_i2c_xfer().","modified":"2026-04-02T08:28:22.783950Z","published":"2025-09-15T14:21:08.534Z","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","SUSE-SU-2025:4315-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50272.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0ed554fd769a19ea8464bb83e9ac201002ef74ad"},{"type":"WEB","url":"https://git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70"},{"type":"WEB","url":"https://git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50272.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50272"},{"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":"76f9a820c8672ada12ffa0903652c9e6f2429462"},{"fixed":"2b6a8a1a32746981044e7ab06649c804acb4068a"},{"fixed":"c712d1ccbfb787620422b437a5b8fac0802547bd"},{"fixed":"7abfe467cd685f5da7ecb415441e45e3e4e2baa8"},{"fixed":"8b256d23361c51aa4b7fdb71176c1ca50966fb39"},{"fixed":"559891d430e3f3a178040c4371ed419edbfa7d65"},{"fixed":"210fcf64be4db82c0e190e74b5111e4eef661a7a"},{"fixed":"6fbc44731a4665cbe92a5090e9804a388a72214b"},{"fixed":"6b60cf73a931af34b7a0a3f467a79d9fe0df2d70"},{"fixed":"0ed554fd769a19ea8464bb83e9ac201002ef74ad"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-50272.json"}}],"schema_version":"1.7.5"}