0.0
NA
CVE-2025-37984
Linux Kernel ECDsa Integer Overflow Vulnerability
Description

In the Linux kernel, the following vulnerability has been resolved: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8): X / 8 + !!(X & 7) Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and use it in lieu of DIV_ROUND_UP() for ->key_size() return values. Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes" parameter is a ->key_size() return value in some instances, or a user-specified ASN.1 length in the case of ecdsa_get_signature_rs().

INFO

Published Date :

May 20, 2025, 6:15 p.m.

Last Modified :

July 25, 2025, 2:15 p.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-37984 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
Solution
Follow the instructions below to mitigate the CVE-2025-37984 vulnerability.
Run 'dnf update kernel6.12 --releasever 2023.8.20250808' to update your system.
Public PoC/Exploit Available at Github

CVE-2025-37984 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

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-2025-37984.

URL Resource
https://git.kernel.org/stable/c/921b8167f10708e38080f84e195cdc68a7a561f1
https://git.kernel.org/stable/c/b16510a530d1e6ab9683f04f8fb34f2e0f538275
https://git.kernel.org/stable/c/f02f0218be412cff1c844addf58e002071be298b
https://git.kernel.org/stable/c/f2133b849ff273abddb6da622daddd8f6f6fa448
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-37984 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-2025-37984 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).

Profile Photo
w4zu/Debian_security

DSA and DLA for Debian last 14 days

Python

Updated: 1 day, 7 hours ago
0 stars 0 fork 0 watcher
Born at : Feb. 12, 2025, 2:08 p.m. This repo has been linked 378 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-37984 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-2025-37984 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.

  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 25, 2025

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/f2133b849ff273abddb6da622daddd8f6f6fa448
  • CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Jul. 17, 2025

    Action Type Old Value New Value
    Added Reference https://git.kernel.org/stable/c/f02f0218be412cff1c844addf58e002071be298b
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    May. 20, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa implementation's ->key_size() callback returns an unusually large value. Herbert instead suggests (for a division by 8): X / 8 + !!(X & 7) Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and use it in lieu of DIV_ROUND_UP() for ->key_size() return values. Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes" parameter is a ->key_size() return value in some instances, or a user-specified ASN.1 length in the case of ecdsa_get_signature_rs().
    Added Reference https://git.kernel.org/stable/c/921b8167f10708e38080f84e195cdc68a7a561f1
    Added Reference https://git.kernel.org/stable/c/b16510a530d1e6ab9683f04f8fb34f2e0f538275
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
No CVSS metrics available for this vulnerability.