CVE-2022-48933
Netfilter Module Memory Leak Vulnerability
Description
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().
INFO
Published Date :
Aug. 22, 2024, 4:15 a.m.
Last Modified :
Aug. 23, 2024, 1:50 a.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-48933.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-48933 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-48933 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Aug. 23, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4 No Types Assigned https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4 Patch Changed Reference Type https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87 No Types Assigned https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87 Patch Changed Reference Type https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826 No Types Assigned https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826 Patch Changed Reference Type https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7 No Types Assigned https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7 Patch Changed Reference Type https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52 No Types Assigned https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52 Patch Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.4 up to (excluding) 5.4.182 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.5 up to (excluding) 5.10.103 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.26 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.12 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 22, 2024
Action Type Old Value New Value Added Description 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(). Added Reference kernel.org https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-48933 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-48933
weaknesses.