CVE-2021-47499

iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove

Description

In the Linux kernel, the following vulnerability has been resolved: iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove When ACPI type is ACPI_SMO8500, the data->dready_trig will not be set, the memory allocated by iio_triggered_buffer_setup() will not be freed, and cause memory leak as follows: unreferenced object 0xffff888009551400 (size 512): comm "i2c-SMO8500-125", pid 911, jiffies 4294911787 (age 83.852s) hex dump (first 32 bytes): 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 20 e2 e5 c0 ff ff ff ff ........ ....... backtrace: [<0000000041ce75ee>] kmem_cache_alloc_trace+0x16d/0x360 [<000000000aeb17b0>] iio_kfifo_allocate+0x41/0x130 [kfifo_buf] [<000000004b40c1f5>] iio_triggered_buffer_setup_ext+0x2c/0x210 [industrialio_triggered_buffer] [<000000004375b15f>] kxcjk1013_probe+0x10c3/0x1d81 [kxcjk_1013] Fix it by remove data->dready_trig condition in probe and remove.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

Link Tags
https://git.kernel.org/stable/c/8c1d43f3a3fc7184c42d7398bdf59a2a2903e4fc patch
https://git.kernel.org/stable/c/60a55b9d91ba99eb8cf015bc46dc2de05e168a15 patch
https://git.kernel.org/stable/c/3899700ddacbf7aaafadf44464fff3ff0d4e3307 patch
https://git.kernel.org/stable/c/a3730f74159ad00a28960c0efe2a931fe6fe6b45 patch
https://git.kernel.org/stable/c/8c163a14277115ca962103910ab4cce55e862ffb patch
https://git.kernel.org/stable/c/ee86d0bad80bdcd11a87e188a596727f41b62320 patch
https://git.kernel.org/stable/c/14508fe13b1c578b3d2ba574f1d48b351975860c patch
https://git.kernel.org/stable/c/70c9774e180d151abaab358108e3510a8e615215 patch

Frequently Asked Questions

What is the severity of CVE-2021-47499?
CVE-2021-47499 has been scored as a medium severity vulnerability.
How to fix CVE-2021-47499?
To fix CVE-2021-47499, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-47499 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-47499 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-47499?
CVE-2021-47499 affects Linux Linux, Linux Linux.
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