CVE-2022-48933

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: fix memory leak during stateful obj update stateful objects can be updated from the control plane. The transaction logic allocates a temporary object for this purpose. The ->init function was called for this object, so plain kfree() leaks resources. We must call ->destroy function of the object. nft_obj_destroy does this, but it also decrements the module refcount, but the update path doesn't increment it. To avoid special-casing the update object release, do module_get for the update case too and release it via nft_obj_destroy().

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/34bb90e407e3288f610558beaae54ecaa32b11c4	Patch
https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87	Patch
https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826	Patch
https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7	Patch
https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52	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::::::::
	cpe:2.3:o:linux:linux_kernel::::::::

History

No history.

Information

Published : 2024-08-22 04:15

Updated : 2024-08-23 01:50

NVD link : CVE-2022-48933

Mitre link : CVE-2022-48933

CVE.ORG link : CVE-2022-48933

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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