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CVE-2021-46966 Detail

Description

In the Linux kernel, the following vulnerability has been resolved: ACPI: custom_method: fix potential use-after-free issue In cm_write(), buf is always freed when reaching the end of the function. If the requested count is less than table.length, the allocated buffer will be freed but subsequent calls to cm_write() will still try to access it. Remove the unconditional kfree(buf) at the end of the function and set the buf to NULL in the -EINVAL error path to match the rest of function.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394 Patch 
https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394 Patch 
https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203 Patch 
https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203 Patch 
https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b Patch 
https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b Patch 
https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be Patch 
https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be Patch 
https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23 Patch 
https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23 Patch 
https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17 Patch 
https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17 Patch 
https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234 Patch 
https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234 Patch 
https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa Patch 
https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa Patch 
https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b Patch 
https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b Patch 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-46966
NVD Published Date:
02/27/2024
NVD Last Modified:
12/06/2024
Source:
kernel.org