CVE-2022-49549
AMD Linux Kernel Memory Leak
Description
In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mce_threshold_remove_device() will not free it. This happens because mce_threshold_remove_device() fetches the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when threshold_create_bank() fails. Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing. [ bp: Massage. ]
INFO
Published Date :
Feb. 26, 2025, 7:01 a.m.
Last Modified :
March 10, 2025, 9:22 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-2022-49549.
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-2022-49549 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-49549 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]
Mar. 10, 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 CWE-401 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 from (excluding) 5.15.46 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 from (excluding) 5.17.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.18 from (excluding) 5.18.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.8 from (excluding) 5.10.121 Added Reference Type kernel.org: https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6 Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e Types: Patch Added Reference Type kernel.org: https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0 Types: Patch -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Feb. 26, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: x86/MCE/AMD: Fix memory leak when threshold_create_bank() fails In mce_threshold_create_device(), if threshold_create_bank() fails, the previously allocated threshold banks array @bp will be leaked because the call to mce_threshold_remove_device() will not free it. This happens because mce_threshold_remove_device() fetches the pointer through the threshold_banks per-CPU variable but bp is written there only after the bank creation is successful, and not before, when threshold_create_bank() fails. Add a helper which unwinds all the bank creation work previously done and pass into it the previously allocated threshold banks array for freeing. [ bp: Massage. ] Added Reference https://git.kernel.org/stable/c/396b8e7ab2a99ddac57d3522b3da5e58cb608d37 Added Reference https://git.kernel.org/stable/c/9708f1956eeb70c86943e0bc62fa3b0101b59616 Added Reference https://git.kernel.org/stable/c/b4acb8e7f1594607bc9017ef0aacb40b24a003d6 Added Reference https://git.kernel.org/stable/c/cc0dd4456f9573bf8af9b4d8754433918e809e1e Added Reference https://git.kernel.org/stable/c/e5f28623ceb103e13fc3d7bd45edf9818b227fd0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-49549 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-2022-49549
weaknesses.