CVE-2024-50021
Intel Ice Reference Count Leak Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() This patch addresses a reference count handling issue in the ice_dpll_init_rclk_pins() function. The function calls ice_dpll_get_pins(), which increments the reference count of the relevant resources. However, if the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function currently returns an error without properly releasing the resources acquired by ice_dpll_get_pins(), leading to a reference count leak. To resolve this, the check has been moved to the top of the function. This ensures that the function verifies the state before any resources are acquired, avoiding the need for additional resource management in the error path. This bug was identified by an experimental static analysis tool developed by our team. The tool specializes in analyzing reference count operations and detecting potential issues where resources are not properly managed. In this case, the tool flagged the missing release operation as a potential problem, which led to the development of this patch.
INFO
Published Date :
Oct. 21, 2024, 8:15 p.m.
Last Modified :
Oct. 25, 2024, 2:52 p.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-2024-50021.
| URL | Resource |
|---|---|
| https://git.kernel.org/stable/c/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d | Patch |
| https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a | Patch |
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The following list is the news that have been mention
CVE-2024-50021 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-50021 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]
Oct. 25, 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/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d No Types Assigned https://git.kernel.org/stable/c/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d Patch Changed Reference Type https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a No Types Assigned https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a Patch Added CWE NIST NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 up to (excluding) 6.11.4 *cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:* -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() This patch addresses a reference count handling issue in the ice_dpll_init_rclk_pins() function. The function calls ice_dpll_get_pins(), which increments the reference count of the relevant resources. However, if the condition WARN_ON((!vsi || !vsi->netdev)) is met, the function currently returns an error without properly releasing the resources acquired by ice_dpll_get_pins(), leading to a reference count leak. To resolve this, the check has been moved to the top of the function. This ensures that the function verifies the state before any resources are acquired, avoiding the need for additional resource management in the error path. This bug was identified by an experimental static analysis tool developed by our team. The tool specializes in analyzing reference count operations and detecting potential issues where resources are not properly managed. In this case, the tool flagged the missing release operation as a potential problem, which led to the development of this patch. Added Reference kernel.org https://git.kernel.org/stable/c/aefecead9d08f4a35ab6f51ba2e408d2cef4e31d [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/ccca30a18e36a742e606d5bf0630e75be7711d0a [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-2024-50021 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-2024-50021
weaknesses.