Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-49793

iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init()

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: iio: trigger: sysfs: fix possible memory leak in iio_sysfs_trig_init() dev_set_name() allocates memory for name, it need be freed when device_add() fails, call put_device() to give up the reference that hold in device_initialize(), so that it can be freed in kobject_cleanup() when the refcount hit to 0. Fault injection test can trigger this: unreferenced object 0xffff8e8340a7b4c0 (size 32): comm "modprobe", pid 243, jiffies 4294678145 (age 48.845s) hex dump (first 32 bytes): 69 69 6f 5f 73 79 73 66 73 5f 74 72 69 67 67 65 iio_sysfs_trigge 72 00 a7 40 83 8e ff ff 00 86 13 c4 f6 ee ff ff r..@............ backtrace: [<0000000074999de8>] __kmem_cache_alloc_node+0x1e9/0x360 [<00000000497fd30b>] __kmalloc_node_track_caller+0x44/0x1a0 [<000000003636c520>] kstrdup+0x2d/0x60 [<0000000032f84da2>] kobject_set_name_vargs+0x1e/0x90 [<0000000092efe493>] dev_set_name+0x4e/0x70

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < f68c96821b61d2c71a35dbb8bf90c347fad624d9affected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < 5a39382aa5411d64b25a71516c2c7480aab13bb7affected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < b47bb521961f027b4dcf8683337a7a1ba9e5ea1faffected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < 0dd52e141afde089304de470148d311b05c14564affected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < 8dddf2699da296c84205582aaead6b43dd7e8c4baffected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < 656f670613662b6cc77aad14112db2803ad18fa8affected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < 2c4e65285bdea23fd36d2ff376006ac64db6f42eaffected
  • 1f785681a87068f123d3e23da13b2c55ab4f93ac to < efa17e90e1711bdb084e3954fa44afb6647331c0affected

Linux Linux

Default version status: affected

  • 3.0affected
  • 0 to < 3.0unaffected
  • 4.9.334 to ≤ 4.9.*unaffected
  • 4.14.300 to ≤ 4.14.*unaffected
  • 4.19.267 to ≤ 4.19.*unaffected
  • 5.4.225 to ≤ 5.4.*unaffected
  • 5.10.156 to ≤ 5.10.*unaffected
  • 5.15.80 to ≤ 5.15.*unaffected
  • 6.0.10 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References