CVE-2025-21745
Linux blk-cgroup Subsystem Refcount Leakage Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @block_class's subsystem refcount leakage blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage. Fix by ending the iterating with class_dev_iter_exit().
INFO
Published Date :
Feb. 27, 2025, 3:15 a.m.
Last Modified :
March 13, 2025, 1:15 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
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information, practical solutions, and valuable tools related to
CVE-2025-21745.
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).
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The following list is the news that have been mention
CVE-2025-21745 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-21745 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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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Mar. 13, 2025
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/38287f779b34dfe959b4b681e909f2d3d52b88be Added Reference https://git.kernel.org/stable/c/ffb494f1e7a047bd7a41b13796fcfb08fe5beafb -
Initial Analysis by [email protected]
Mar. 05, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Added CWE NVD-CWE-Other Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 from (excluding) 6.13.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.2 from (excluding) 6.6.78 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 from (excluding) 6.12.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.9 from (excluding) 6.1.129 Added Reference Type kernel.org: https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 27, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @block_class's subsystem refcount leakage blkcg_fill_root_iostats() iterates over @block_class's devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the class's subsystem refcount leakage. Fix by ending the iterating with class_dev_iter_exit(). Added Reference https://git.kernel.org/stable/c/2ce09aabe009453d641a2ceb79e6461a2d4f3876 Added Reference https://git.kernel.org/stable/c/431b6ef2714be4d5babb802114987541a88b43b0 Added Reference https://git.kernel.org/stable/c/67c7f213e052b1aa6caba4a7e25e303bc6997126 Added Reference https://git.kernel.org/stable/c/993121481b5a87829f1e8163f47158b72679f309 Added Reference https://git.kernel.org/stable/c/d1248436cbef1f924c04255367ff4845ccd9025e
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-21745 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-2025-21745
weaknesses.