CVE-2021-47295

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/8d7924ce85bae64e7a67c366c7c50840f49f3a62
https://git.kernel.org/stable/c/8e9662fde6d63c78eb1350f6167f64c9d71a865b
https://git.kernel.org/stable/c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1
https://git.kernel.org/stable/c/f5051bcece50140abd1a11a2d36dc3ec5484fc32

Configurations

No configuration.

History

No history.

Information

Published : 2024-05-21 15:15

Updated : 2024-07-03 01:37

NVD link : CVE-2021-47295

Mitre link : CVE-2021-47295

CVE.ORG link : CVE-2021-47295

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

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