Instituto Nacional de ciberseguridad. Sección Incibe
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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 -&gt;init function was called for this object, so plain kfree() leaks<br /> resources. We must call -&gt;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&amp;#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

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

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