medium5.5
CVE-2021-47364
In the Linux kernel, the following vulnerability has been resolved: comedi: Fix memory leak in compat_insnlist() `compat_insnlist()` handles the 32-bit version…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.8 before 5.10.70 from 5.11 before 5.14.9 Version 5.15 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a
- https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596
- https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671
- https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a
- https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596
- https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671