CVE-2022-49793
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/05/2025
Last modified:
02/05/2025
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()<br />
<br />
dev_set_name() allocates memory for name, it need be freed<br />
when device_add() fails, call put_device() to give up the<br />
reference that hold in device_initialize(), so that it can<br />
be freed in kobject_cleanup() when the refcount hit to 0.<br />
<br />
Fault injection test can trigger this:<br />
<br />
unreferenced object 0xffff8e8340a7b4c0 (size 32):<br />
comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s)<br />
hex dump (first 32 bytes):<br />
69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge<br />
72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............<br />
backtrace:<br />
[] __kmem_cache_alloc_node+0x1e9/0x360<br />
[] __kmalloc_node_track_caller+0x44/0x1a0<br />
[] kstrdup+0x2d/0x60<br />
[] kobject_set_name_vargs+0x1e/0x90<br />
[] dev_set_name+0x4e/0x70
Impact
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/0dd52e141afde089304de470148d311b05c14564
- https://git.kernel.org/stable/c/2c4e65285bdea23fd36d2ff376006ac64db6f42e
- https://git.kernel.org/stable/c/5a39382aa5411d64b25a71516c2c7480aab13bb7
- https://git.kernel.org/stable/c/656f670613662b6cc77aad14112db2803ad18fa8
- https://git.kernel.org/stable/c/8dddf2699da296c84205582aaead6b43dd7e8c4b
- https://git.kernel.org/stable/c/b47bb521961f027b4dcf8683337a7a1ba9e5ea1f
- https://git.kernel.org/stable/c/efa17e90e1711bdb084e3954fa44afb6647331c0
- https://git.kernel.org/stable/c/f68c96821b61d2c71a35dbb8bf90c347fad624d9