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:
<TASK>
__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().
References
Configurations
Configuration 1 (hide)
|
History
03 Dec 2025, 18:19
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| First Time |
Linux
Linux linux Kernel |
|
| CWE | CWE-476 | |
| References | () https://git.kernel.org/stable/c/0ed554fd769a19ea8464bb83e9ac201002ef74ad - Patch | |
| References | () https://git.kernel.org/stable/c/210fcf64be4db82c0e190e74b5111e4eef661a7a - Patch | |
| References | () https://git.kernel.org/stable/c/2b6a8a1a32746981044e7ab06649c804acb4068a - Patch | |
| References | () https://git.kernel.org/stable/c/559891d430e3f3a178040c4371ed419edbfa7d65 - Patch | |
| References | () https://git.kernel.org/stable/c/6b60cf73a931af34b7a0a3f467a79d9fe0df2d70 - Patch | |
| References | () https://git.kernel.org/stable/c/6fbc44731a4665cbe92a5090e9804a388a72214b - Patch | |
| References | () https://git.kernel.org/stable/c/7abfe467cd685f5da7ecb415441e45e3e4e2baa8 - Patch | |
| References | () https://git.kernel.org/stable/c/8b256d23361c51aa4b7fdb71176c1ca50966fb39 - Patch | |
| References | () https://git.kernel.org/stable/c/c712d1ccbfb787620422b437a5b8fac0802547bd - Patch |
Information
Published : 2025-09-15 15:15
Updated : 2025-12-03 18:19
NVD link : CVE-2022-50272
Mitre link : CVE-2022-50272
CVE.ORG link : CVE-2022-50272
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference