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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-47364

comedi: Fix memory leak in compat_insnlist()

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: comedi: Fix memory leak in compat_insnlist() `compat_insnlist()` handles the 32-bit version of the `COMEDI_INSNLIST` ioctl (whenwhen `CONFIG_COMPAT` is enabled). It allocates memory to temporarily hold an array of `struct comedi_insn` converted from the 32-bit version in user space. This memory is only being freed if there is a fault while filling the array, otherwise it is leaked. Add a call to `kfree()` to fix the leak.

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

  • b8d47d8813055ce38c0d2ad913d5462017e52692 to < 8d6a21e4cd6a319b0662cbe4ad6199e276ac776aaffected
  • b8d47d8813055ce38c0d2ad913d5462017e52692 to < f217b6c1e28ed0b353634ce4d92a155b80bd1671affected
  • b8d47d8813055ce38c0d2ad913d5462017e52692 to < bb509a6ffed2c8b0950f637ab5779aa818ed1596affected

Linux Linux

Default version status: affected

  • 5.8affected
  • 0 to < 5.8unaffected
  • 5.10.70 to ≤ 5.10.*unaffected
  • 5.14.9 to ≤ 5.14.*unaffected
  • 5.15 to ≤ *unaffected

References