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CVE-2021-47058

UNKNOWN
Published 2024-02-29T22:37:33.232Z
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No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Linux

Linux

Affected Versions:

5b654b03007917f3f1015b2a5c288c1ea6ae8f65 480c5e9c7e4c76c01d5f1f7b73832d7b77e6b427 c9698380b01aed3281160d3ab25749b57d6913b8 cffa4b2122f5f3e53cf3d529bbc74651f95856d5 cffa4b2122f5f3e53cf3d529bbc74651f95856d5 cffa4b2122f5f3e53cf3d529bbc74651f95856d5
Linux

Linux

Affected Versions:

5.11 0 4.19.191 5.4.119 5.10.37 5.11.21 5.12.4 5.13

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-69w7-5x2m-p8cp

Advisory Details

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.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-47058
WEB https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867
WEB https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
WEB https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d
WEB https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52
WEB https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268
WEB https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6

Advisory provided by GitHub Security Advisory Database. Published: March 1, 2024, Modified: December 10, 2024

References

https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867
https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52
https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6
https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d
https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268
Published: 2024-02-29T22:37:33.232Z
Last Modified: 2025-05-04T07:03:20.494Z
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