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5.5
MEDIUM CVSS 3.1
CVE-2022-49097
NFS: Avoid writeback threads getting stuck in mempool_alloc()
Description

In the Linux kernel, the following vulnerability has been resolved: NFS: Avoid writeback threads getting stuck in mempool_alloc() In a low memory situation, allow the NFS writeback code to fail without getting stuck in infinite loops in mempool_alloc().

INFO

Published Date :

Feb. 26, 2025, 7 a.m.

Last Modified :

Sept. 23, 2025, 4:47 p.m.

Remotely Exploit :

No

Source :

416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products

The following products are affected by CVE-2022-49097 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Linux linux_kernel
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
Solution
Update the Linux kernel to the latest version to fix NFS writeback issues.
  • Update the Linux kernel to resolve the mempool_alloc() issue.
  • Ensure proper memory management in NFS writeback operations.
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-2022-49097.

URL Resource
https://git.kernel.org/stable/c/0bae835b63c53f86cdc524f5962e39409585b22c Patch
https://git.kernel.org/stable/c/1b3fa9a3c420c31e77b406ddc28f3a627100516c Patch
https://git.kernel.org/stable/c/a6caeddd68977a1aaaf62fbd1955b41dd5c3c5d3 Patch
https://git.kernel.org/stable/c/c74e2f6ecc51bd08bb5b0335477dba954a50592e Patch
https://git.kernel.org/stable/c/ea029e4ce760f786919d06ef52efa2e50ea92a5f Patch
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2022-49097 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-2022-49097 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-2022-49097 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2022-49097 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]

    Sep. 23, 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-835
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.16 up to (excluding) 5.16.20 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.17 up to (excluding) 5.17.3 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 5.11 up to (excluding) 5.15.34 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.10.111
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/0bae835b63c53f86cdc524f5962e39409585b22c Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/1b3fa9a3c420c31e77b406ddc28f3a627100516c Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/a6caeddd68977a1aaaf62fbd1955b41dd5c3c5d3 Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/c74e2f6ecc51bd08bb5b0335477dba954a50592e Types: Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/ea029e4ce760f786919d06ef52efa2e50ea92a5f 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: NFS: Avoid writeback threads getting stuck in mempool_alloc() In a low memory situation, allow the NFS writeback code to fail without getting stuck in infinite loops in mempool_alloc().
    Added Reference https://git.kernel.org/stable/c/0bae835b63c53f86cdc524f5962e39409585b22c
    Added Reference https://git.kernel.org/stable/c/1b3fa9a3c420c31e77b406ddc28f3a627100516c
    Added Reference https://git.kernel.org/stable/c/a6caeddd68977a1aaaf62fbd1955b41dd5c3c5d3
    Added Reference https://git.kernel.org/stable/c/c74e2f6ecc51bd08bb5b0335477dba954a50592e
    Added Reference https://git.kernel.org/stable/c/ea029e4ce760f786919d06ef52efa2e50ea92a5f
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.5
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact