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CVE-2021-47364 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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

Weakness Enumeration

CWE-ID CWE Name Source
CWE-401 Missing Release of Memory after Effective Lifetime cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
   Show Matching CPE(s)
From (including)
5.8
Up to (excluding)
5.10.70
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
   Show Matching CPE(s)
From (including)
5.11
Up to (excluding)
5.14.9
 cpe:2.3:o:linux:linux_kernel:5.15:rc1:*:*:*:*:*:*
   Show Matching CPE(s)
 cpe:2.3:o:linux:linux_kernel:5.15:rc2:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47364
NVD Published Date:
05/21/2024
NVD Last Modified:
12/26/2024
Source:
kernel.org