CVE-2021-47499

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

published May 24, 2024

CVSS
—
EPSS
0%
Percentile
14.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00240 · 14.2th percentile
Published
2024-05-24T15:01Z
EPSS history
Timeline
  • 24 MAY 15:01Z
    iio: accel: kxcjk-1013: Fix possible memory leak in probe and remove
    cvelistv5