CVE-2022-48933
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
22/08/2024
Last modified:
23/08/2024
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
netfilter: nf_tables: fix memory leak during stateful obj update<br />
<br />
stateful objects can be updated from the control plane.<br />
The transaction logic allocates a temporary object for this purpose.<br />
<br />
The ->init function was called for this object, so plain kfree() leaks<br />
resources. We must call ->destroy function of the object.<br />
<br />
nft_obj_destroy does this, but it also decrements the module refcount,<br />
but the update path doesn&#39;t increment it.<br />
<br />
To avoid special-casing the update object release, do module_get for<br />
the update case too and release it via nft_obj_destroy().
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.4 (including) | 5.4.182 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.5 (including) | 5.10.103 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.11 (including) | 5.15.26 (excluding) |
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (including) | 5.16.12 (excluding) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://git.kernel.org/stable/c/34bb90e407e3288f610558beaae54ecaa32b11c4
- https://git.kernel.org/stable/c/53026346a94c43f35c32b18804041bc483271d87
- https://git.kernel.org/stable/c/7e9880e81d3fd6a43c202f205717485290432826
- https://git.kernel.org/stable/c/dad3bdeef45f81a6e90204bcc85360bb76eccec7
- https://git.kernel.org/stable/c/e96e204ee6fa46702f6c94c3c69a09e69e0eac52