CVE-2022-50245

Summary

In the Linux kernel, the following vulnerability has been resolved:

rapidio: fix possible UAF when kfifo_alloc() fails

If kfifo_alloc() fails in mport_cdev_open(), goto err_fifo and just free priv. But priv is still in the chdev->file_list, then list traversal may cause UAF. This fixes the following smatch warning:

drivers/rapidio/devices/rio_mport_cdev.c:1930 mport_cdev_open() warn: '&priv->list' not removed from list

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 2a6c75adf8192f07ddcdd4a1a13488c890a73919affected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 2dfd60724d271a6ab99f93f40f38f2ced1ddbb87affected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < a253dde0403a153075ffb254f6f7b2635e49e97aaffected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 311b488405ac45af46756b1c8f1d27007b68b07eaffected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 5ee850645e42f541ce1ea8130c2b27cc495f965caffected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 2f5cc7fd73fd6253cc71214f0dd499cc62feb469affected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 2ba06e57f933f0eac242e8b389433da1cc00d4d5affected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < cb87af2c19c0993f6e21f75b963a5599c5a73e76affected
LinuxLinuxe8de370188d098bb49483c287b44925957c3c9b6 < 02d7d89f816951e0862147d751b1150d67aaebddaffected
LinuxLinux4.6affected
LinuxLinux0 < 4.6unaffected
LinuxLinux4.9.337 <= 4.9.*unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References