CVE - CVE-2021-46966

CVE-ID
CVE-2021-46966	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394 URL:https://git.kernel.org/stable/c/1d53ca5d131074c925ce38361fb0376d3bf7e394 MISC:https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203 URL:https://git.kernel.org/stable/c/62dc2440ebb552aa0d7f635e1697e077d9d21203 MISC:https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b URL:https://git.kernel.org/stable/c/72814a94c38a33239793f7622cec6ace1e540c4b MISC:https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be URL:https://git.kernel.org/stable/c/8b04d57f30caf76649d0567551589af9a66ca9be MISC:https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23 URL:https://git.kernel.org/stable/c/90575d1d9311b753cf1718f4ce9061ddda7dfd23 MISC:https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17 URL:https://git.kernel.org/stable/c/a5b26a2e362f572d87e9fd35435680e557052a17 MISC:https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234 URL:https://git.kernel.org/stable/c/b7a5baaae212a686ceb812c32fceed79c03c0234 MISC:https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa URL:https://git.kernel.org/stable/c/e483bb9a991bdae29a0caa4b3a6d002c968f94aa MISC:https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b URL:https://git.kernel.org/stable/c/f16737caf41fc06cfe6e49048becb09657074d4b
Assigning CNA
kernel.org
Date Record Created
20240227	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240227)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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