CVE-2025-38466
Linux Kernel perf Uprobe Privilege Escalation Vulnerability
Description
In the Linux kernel, the following vulnerability has been resolved: perf: Revert to requiring CAP_SYS_ADMIN for uprobes Jann reports that uprobes can be used destructively when used in the middle of an instruction. The kernel only verifies there is a valid instruction at the requested offset, but due to variable instruction length cannot determine if this is an instruction as seen by the intended execution stream. Additionally, Mark Rutland notes that on architectures that mix data in the text segment (like arm64), a similar things can be done if the data word is 'mistaken' for an instruction. As such, require CAP_SYS_ADMIN for uprobes.
INFO
Published Date :
July 25, 2025, 4:15 p.m.
Last Modified :
July 29, 2025, 2:14 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Update the affected Linux packages to resolve this vulnerability.
Public PoC/Exploit Available at Github
CVE-2025-38466 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-2025-38466.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-38466 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-2025-38466
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).
DSA and DLA for Debian last 14 days
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-38466 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-38466 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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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jul. 25, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: perf: Revert to requiring CAP_SYS_ADMIN for uprobes Jann reports that uprobes can be used destructively when used in the middle of an instruction. The kernel only verifies there is a valid instruction at the requested offset, but due to variable instruction length cannot determine if this is an instruction as seen by the intended execution stream. Additionally, Mark Rutland notes that on architectures that mix data in the text segment (like arm64), a similar things can be done if the data word is 'mistaken' for an instruction. As such, require CAP_SYS_ADMIN for uprobes. Added Reference https://git.kernel.org/stable/c/183bdb89af1b5193b1d1d9316986053b15ca6fa4 Added Reference https://git.kernel.org/stable/c/8e8bf7bc6aa6f583336c2fda280b6cea0aed5612 Added Reference https://git.kernel.org/stable/c/a0a8009083e569b5526c64f7d3f2a62baca95164 Added Reference https://git.kernel.org/stable/c/ba677dbe77af5ffe6204e0f3f547f3ba059c6302 Added Reference https://git.kernel.org/stable/c/c0aec35f861fa746ca45aa816161c74352e6ada8 Added Reference https://git.kernel.org/stable/c/d5074256b642cdeb46a70ce2f15193e766edca68 Added Reference https://git.kernel.org/stable/c/d7ef1afd5b3f43f4924326164cee5397b66abd9c