CVE-2022-50301

Summary

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

iommu/omap: Fix buffer overflow in debugfs

There are two issues here:

  1. The "len" variable needs to be checked before the very first write. Otherwise if omap2_iommu_dump_ctx() with "bytes" less than 32 it is a buffer overflow.
  2. The snprintf() function returns the number of bytes that would have been copied if there were enough space. But we want to know the number of bytes which were actually copied so use scnprintf() instead.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 706e359cf046c142db290244c3f4938b20fbe805affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < ec53b99b6b9da8b501f001595a6260c03b42d5b7affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 648472df221f2bbffb433b964bcb87baccc586d8affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 4010a1afaae1c0fb9c2cac5de703bed29b1f1782affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 2fee0dbfaeaaa4bda04279ce772c4572b1429d04affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 0c7043a5b5c3b35f5dc8875757f71e7f491d64d4affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < bd0438f534b2e31b12f0b39b355c5dc2bbdaf854affected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 9814cc350e0765ce69244bf55ae4c8b29facd27eaffected
LinuxLinuxbd4396f09a4a9e77423e92ec9448217ab46f6edf < 184233a5202786b20220acd2d04ddf909ef18f29affected
LinuxLinux3.19affected
LinuxLinux0 < 3.19unaffected
LinuxLinux4.9.331 <= 4.9.*unaffected
LinuxLinux4.14.296 <= 4.14.*unaffected
LinuxLinux4.19.262 <= 4.19.*unaffected
LinuxLinux5.4.220 <= 5.4.*unaffected
LinuxLinux5.10.150 <= 5.10.*unaffected
LinuxLinux5.15.75 <= 5.15.*unaffected
LinuxLinux5.19.17 <= 5.19.*unaffected
LinuxLinux6.0.3 <= 6.0.*unaffected
LinuxLinux6.1 <= *unaffected

Weaknesses

References