CVE-2022-50272
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-15
Last updated on: 2025-12-03
Assigner: kernel.org
Description
Description
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().
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 2.6.34 (inc) to 4.9.337 (exc) |
| linux | linux_kernel | From 4.10 (inc) to 4.14.303 (exc) |
| linux | linux_kernel | From 4.15 (inc) to 4.19.270 (exc) |
| linux | linux_kernel | From 4.20 (inc) to 5.4.229 (exc) |
| linux | linux_kernel | From 5.5 (inc) to 5.10.163 (exc) |
| linux | linux_kernel | From 5.11 (inc) to 5.15.86 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.0.16 (exc) |
| linux | linux_kernel | From 6.1 (inc) to 6.1.2 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-476 | The product dereferences a pointer that it expects to be valid but is NULL. |
