cbcvebase.
CVE-2022-50272
published 2025-09-15

CVE-2022-50272: In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer() Wei Chen reports a kernel…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.7th percentile
In the Linux kernel, the following vulnerability has been resolved: media: dvb-usb: az6027: fix null-ptr-deref in az6027_i2c_xfer() Wei Chen reports a kernel bug as blew: general protection fault, probably for non-canonical address KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] ... Call Trace: __i2c_transfer+0x77e/0x1930 drivers/i2c/i2c-core-base.c:2109 i2c_transfer+0x1d5/0x3d0 drivers/i2c/i2c-core-base.c:2170 i2cdev_ioctl_rdwr+0x393/0x660 drivers/i2c/i2c-dev.c:297 i2cdev_ioctl+0x75d/0x9f0 drivers/i2c/i2c-dev.c:458 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd834a8bded In az6027_i2c_xfer(), if msg[i].addr is 0x99, a null-ptr-deref will caused when accessing msg[i].buf. For msg[i].len is 0 and msg[i].buf is null. Fix this by checking msg[i].len in az6027_i2c_xfer().

Affected

23 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.4-1 (bookworm)linux 6.1.4-1 (bookworm)
linuxlinux——
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 2b6a8a1a32746981044e7ab06649c804acb4068a2b6a8a1a32746981044e7ab06649c804acb4068a
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < c712d1ccbfb787620422b437a5b8fac0802547bdc712d1ccbfb787620422b437a5b8fac0802547bd
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 7abfe467cd685f5da7ecb415441e45e3e4e2baa87abfe467cd685f5da7ecb415441e45e3e4e2baa8
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 8b256d23361c51aa4b7fdb71176c1ca50966fb398b256d23361c51aa4b7fdb71176c1ca50966fb39
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 559891d430e3f3a178040c4371ed419edbfa7d65559891d430e3f3a178040c4371ed419edbfa7d65
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 210fcf64be4db82c0e190e74b5111e4eef661a7a210fcf64be4db82c0e190e74b5111e4eef661a7a
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 6fbc44731a4665cbe92a5090e9804a388a72214b6fbc44731a4665cbe92a5090e9804a388a72214b
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 6b60cf73a931af34b7a0a3f467a79d9fe0df2d706b60cf73a931af34b7a0a3f467a79d9fe0df2d70
linuxlinux>= 76f9a820c8672ada12ffa0903652c9e6f2429462 < 0ed554fd769a19ea8464bb83e9ac201002ef74ad0ed554fd769a19ea8464bb83e9ac201002ef74ad
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 0 < 6.1.4-16.1.4-1
linuxlinux_kernel>= 2.6.34 < 4.9.3374.9.337
linuxlinux_kernel>= 4.10 < 4.14.3034.14.303
linuxlinux_kernel>= 4.15 < 4.19.2704.19.270
linuxlinux_kernel>= 4.20 < 5.4.2295.4.229
linuxlinux_kernel>= 5.11 < 5.15.865.15.86
linuxlinux_kernel>= 5.16 < 6.0.166.0.16
linuxlinux_kernel>= 5.5 < 5.10.1635.10.163
linuxlinux_kernel>= 6.1 < 6.1.26.1.2

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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