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7.1
HIGH CVSS 3.1
CVE-2025-21789
LoongArch Linux Kernel Out-of-Bounds Read
Description

In the Linux kernel, the following vulnerability has been resolved: LoongArch: csum: Fix OoB access in IP checksum code for negative lengths Commit 69e3a6aa6be2 ("LoongArch: Add checksum optimization for 64-bit system") would cause an undefined shift and an out-of-bounds read. Commit 8bd795fedb84 ("arm64: csum: Fix OoB access in IP checksum code for negative lengths") fixes the same issue on ARM64.

INFO

Published Date :

Feb. 27, 2025, 3:15 a.m.

Last Modified :

Feb. 27, 2025, 3:15 a.m.

Remotely Exploit :

No

Source :

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

The following products are affected by CVE-2025-21789 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 HIGH [email protected]
Solution
Update the Linux kernel to fix an out-of-bounds read vulnerability.
  • Update the Linux kernel to the latest version.
  • Apply the provided kernel patches.
  • Verify the integrity of the kernel image.
  • Reboot the system after updates.
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-2025-21789.

URL Resource
https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a
https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06
https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97
https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-21789 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-2025-21789 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-2025-21789 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-2025-21789 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]

    Mar. 05, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
    Added CWE CWE-125
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:6.14:rc1:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.13 from (excluding) 6.13.4 *cpe:2.3:o:linux:linux_kernel:6.14:rc2:*:*:*:*:*:* *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.7 from (excluding) 6.12.16 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.4 from (excluding) 6.6.79
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06 Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97 Types: Mailing List, Patch
    Added Reference Type kernel.org: https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7 Types: Mailing List, Patch
  • New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67

    Feb. 27, 2025

    Action Type Old Value New Value
    Added Description In the Linux kernel, the following vulnerability has been resolved: LoongArch: csum: Fix OoB access in IP checksum code for negative lengths Commit 69e3a6aa6be2 ("LoongArch: Add checksum optimization for 64-bit system") would cause an undefined shift and an out-of-bounds read. Commit 8bd795fedb84 ("arm64: csum: Fix OoB access in IP checksum code for negative lengths") fixes the same issue on ARM64.
    Added Reference https://git.kernel.org/stable/c/6287f1a8c16138c2ec750953e35039634018c84a
    Added Reference https://git.kernel.org/stable/c/964a8895704a22efc06a2a3276b624a5ae985a06
    Added Reference https://git.kernel.org/stable/c/9f15a8df542c0f08732a67d1a14ee7c22948fb97
    Added Reference https://git.kernel.org/stable/c/d6508ffff32b44b6d0de06704034e4eef1c307a7
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: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact