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CVE-2021-47364

comedi: Fix memory leak in compat_insnlist() PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Linux / Linuxaffected b8d47d8813055ce38c0d2ad913d5462017e52692 before 8d6a21e4cd6a319b0662cbe4ad6199e276ac776a; affected b8d47d8813055ce38c0d2ad913d5462017e52692 before f217b6c1e28ed0b353634ce4d92a155b80bd1671; affected b8d47d8813055ce38c0d2ad913d5462017e52692 before bb509a6ffed2c8b0950f637ab5779aa818ed1596
Linux / Linuxaffected 5.8; unaffected 0 before 5.8; unaffected 5.10.70 through 5.10.*; unaffected 5.14.9 through 5.14.*; unaffected 5.15 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.