CVE-2021-47058
regmap: set debugfs_name to NULL after it is freed
Description
In the Linux kernel, the following vulnerability has been resolved: regmap: set debugfs_name to NULL after it is freed There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed.
INFO
Published Date :
Feb. 29, 2024, 11:15 p.m.
Last Modified :
Dec. 10, 2024, 5:54 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update the affected Linux kernel packages.
- Reboot the system to apply the update.
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-2021-47058.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-47058 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-2021-47058
weaknesses.
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-2021-47058 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-47058 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.
-
Initial Analysis by [email protected]
Dec. 10, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE NIST CWE-416 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 4.19.168 up to (excluding) 4.19.191 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.4.90 up to (excluding) 5.4.119 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.10.8 up to (excluding) 5.10.37 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.11.21 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.12 up to (excluding) 5.12.4 Changed Reference Type https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 No Types Assigned https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 Patch Changed Reference Type https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 No Types Assigned https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 Patch Changed Reference Type https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a No Types Assigned https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a Patch Changed Reference Type https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a No Types Assigned https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a Patch Changed Reference Type https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d No Types Assigned https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d Patch Changed Reference Type https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d No Types Assigned https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d Patch Changed Reference Type https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 No Types Assigned https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 Patch Changed Reference Type https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 No Types Assigned https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 Patch Changed Reference Type https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 No Types Assigned https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 Patch Changed Reference Type https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 No Types Assigned https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 Patch Changed Reference Type https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 No Types Assigned https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 Patch Changed Reference Type https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 No Types Assigned https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 Patch -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 Added Reference https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a Added Reference https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d Added Reference https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 Added Reference https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 Added Reference https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 28, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 29, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: regmap: set debugfs_name to NULL after it is freed There is a upstream commit cffa4b2122f5("regmap:debugfs: Fix a memory leak when calling regmap_attach_dev") that adds a if condition when create name for debugfs_name. With below function invoking logical, debugfs_name is freed in regmap_debugfs_exit(), but it is not created again because of the if condition introduced by above commit. regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init() So, set debugfs_name to NULL after it is freed. Added Reference Linux https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a [No types assigned] Added Reference Linux https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 [No types assigned]