Skip to content
CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-50282

chardev: fix error handling in cdev_device_add()

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

Description

In the Linux kernel, the following vulnerability has been resolved: chardev: fix error handling in cdev_device_add() While doing fault injection test, I got the following report: ------------[ cut here ]------------ kobject: '(null)' (0000000039956980): is not initialized, yet kobject_put() is being called. WARNING: CPU: 3 PID: 6306 at kobject_put+0x23d/0x4e0 CPU: 3 PID: 6306 Comm: 283 Tainted: G W 6.1.0-rc2-00005-g307c1086d7c9 #1253 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:kobject_put+0x23d/0x4e0 Call Trace: <TASK> cdev_device_add+0x15e/0x1b0 __iio_device_register+0x13b4/0x1af0 [industrialio] __devm_iio_device_register+0x22/0x90 [industrialio] max517_probe+0x3d8/0x6b4 [max517] i2c_device_probe+0xa81/0xc00 When device_add() is injected fault and returns error, if dev->devt is not set, cdev_add() is not called, cdev_del() is not needed. Fix this by checking dev->devt in error path.

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

  • da97a80a657d1b1b50ef633e8ff5dbf0d417fc8d to < 5d2146889fad4cb9e6c13e790d4cfd871486eca8affected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < 6acf8597c5b04f455ee0649e11e5f3bcd28f381eaffected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < 34d17b39bceef25e4cf9805cd59250ae05d0a139affected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < d85b5247a79355b8432bfd9ac871f96117f750d4affected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < c46db6088bccff5115674d583fef46ede80077a2affected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < 28dc61cc49c6e995121c6d86bef4b73df78dda80affected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < b5de1eac71fec1af7723f1083d23a24789fd795caffected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < 85a5660491b507d33662b8e81c142e6041e642ebaffected
  • 233ed09d7fdacf592ee91e6c97ce5f4364fbe7c0 to < 11fa7fefe3d8fac7da56bc9aa3dd5fb3081ca797affected
  • f78b54e7d83c7879f9a6e49e6724019ca34177ccaffected
  • d79d7d5c878809964da537336dad5ff55fa1605eaffected
  • 4.9.224 to < 4.9.337affected
  • 3.16.83 to < 3.17affected
  • 4.4.224 to < 4.5affected

Linux Linux

Default version status: affected

  • 4.12affected
  • 0 to < 4.12unaffected
  • 4.9.337 to ≤ 4.9.*unaffected
  • 4.14.303 to ≤ 4.14.*unaffected
  • 4.19.270 to ≤ 4.19.*unaffected
  • 5.4.229 to ≤ 5.4.*unaffected
  • 5.10.163 to ≤ 5.10.*unaffected
  • 5.15.86 to ≤ 5.15.*unaffected
  • 6.0.16 to ≤ 6.0.*unaffected
  • 6.1.2 to ≤ 6.1.*unaffected
  • 6.2 to ≤ *unaffected

References