vulnerability
Debian: CVE-2022-49468: linux -- security update
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | Feb 27, 2025 | Feb 27, 2025 | Mar 19, 2025 |
Description
In the Linux kernel, the following vulnerability has been resolved:
thermal/core: Fix memory leak in __thermal_cooling_device_register()
I got memory leak as follows when doing fault injection test:
unreferenced object 0xffff888010080000 (size 264312):
comm "182", pid 102533, jiffies 4296434960 (age 10.100s)
hex dump (first 32 bytes):
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
ff ff ff ff ff ff ff ff 40 7f 1f b9 ff ff ff ff ........@.......
backtrace:
[] kmalloc_order_trace+0x1d/0x110 mm/slab_common.c:969
[] __kmalloc+0x373/0x420 include/linux/slab.h:510
[] thermal_cooling_device_setup_sysfs+0x15d/0x2d0 include/linux/slab.h:586
[] __thermal_cooling_device_register+0x332/0xa60 drivers/thermal/thermal_core.c:927
[] devm_thermal_of_cooling_device_register+0x6b/0xf0 drivers/thermal/thermal_core.c:1041
[] max6650_probe.cold+0x557/0x6aa drivers/hwmon/max6650.c:211
[] i2c_device_probe+0x472/0xac0 drivers/i2c/i2c-core-base.c:561
If device_register() fails, thermal_cooling_device_destroy_sysfs() need be called
to free the memory allocated in thermal_cooling_device_setup_sysfs().
Solution

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