CyberSecBulletin
CVE-2025-38482NVD status: Analyzed

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2025-38482 is a high-severity out-of-bounds read vulnerability in Linux, with a CVSS 3.1 base score of 7.1 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists versions a15e9c175f783298c4ee48146be6841335400406, de8da1063cce9234d55c8270d9bdf4cf84411c80, 73f34d609397805c20d6b2ef5c07a4cbf7c4d63a as the first without the flaw, so updating Linux to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.19% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update Linux to a15e9c175f783298c4ee48146be6841335400406 or de8da1063cce9234d55c8270d9bdf4cf84411c80 or 73f34d609397805c20d6b2ef5c07a4cbf7c4d63a or a18a42e77545afcacd6a2b8d9fc16191b87454df, whichever matches your release line, or a later version.
  2. Update Linux Kernel to 5.4.297 or 5.10.241 or 5.15.190 or 6.1.147, whichever matches your release line, or a later version.

Affected products and versions

VendorProductAffected versionsFixed in
LinuxLinux79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, a15e9c175f783298c4ee48146be6841335400406; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, de8da1063cce9234d55c8270d9bdf4cf84411c80; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, 73f34d609397805c20d6b2ef5c07a4cbf7c4d63a; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, a18a42e77545afcacd6a2b8d9fc16191b87454df; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, 8a3637027ceeba4ca5e500b23cb7d24c25592513; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, 3eab654f5d199ecd45403c6588cda63e491fcfca; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, 4a3c18cde02e35aba87e0ad5672b3e1c72dda5a4; 79e5e6addbb18bf56075f0ff552094a28636dd03 up to, but not including, 70f2b28b5243df557f51c054c20058ae207baaac; and 1 more rangesa15e9c175f783298c4ee48146be6841335400406, de8da1063cce9234d55c8270d9bdf4cf84411c80, 73f34d609397805c20d6b2ef5c07a4cbf7c4d63a, a18a42e77545afcacd6a2b8d9fc16191b87454df, 8a3637027ceeba4ca5e500b23cb7d24c25592513, 3eab654f5d199ecd45403c6588cda63e491fcfca
LinuxLinux Kernel3.15 up to, but not including, 5.4.297; 5.5 up to, but not including, 5.10.241; 5.11 up to, but not including, 5.15.190; 5.16 up to, but not including, 6.1.147; 6.2 up to, but not including, 6.6.100; 6.7 up to, but not including, 6.12.40; 6.13 up to, but not including, 6.15.8; 6.165.4.297, 5.10.241, 5.15.190, 6.1.147, 6.6.100, 6.12.40
DebianDebian Linux11.0Not stated

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
NoneNothing can be modified.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H. Scored by NVD.

Official description

In the Linux kernel, the following vulnerability has been resolved: comedi: das6402: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: /* IRQs 2,3,5,6,7, 10,11,15 are valid for "enhanced" mode */ if ((1 << it->options[1]) & 0x8cec) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test. Valid `it->options[1]` values that select the IRQ will be in the range [1,15]. The value 0 explicitly disables the use of interrupts.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

How developers prevent this class of flaw

  • Use a language that provides appropriate memory abstractions.

More Out-of-bounds Read vulnerabilities (CWE-125)

Timeline

  1. CVE record published.
  2. Record last changed materially (score, affected products, status or references).

References

Recent Out-of-bounds Read vulnerabilities

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