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 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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a	Patch
https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596	Patch
https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671	Patch
https://git.kernel.org/stable/c/8d6a21e4cd6a319b0662cbe4ad6199e276ac776a	Patch
https://git.kernel.org/stable/c/bb509a6ffed2c8b0950f637ab5779aa818ed1596	Patch
https://git.kernel.org/stable/c/f217b6c1e28ed0b353634ce4d92a155b80bd1671	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.15:rc2::::::

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-12-26 17:56

NVD link : CVE-2021-47364

Mitre link : CVE-2021-47364

CVE.ORG link : CVE-2021-47364

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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