CyberSecBulletin
CVE-2025-38483NVD status: Analyzed

Linux: Out-of-bounds Read

Published Updated By the CyberSecBulletin desk

CVE-2025-38483 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 539bdff832adac9ea653859fa0b6bc62e743329c, d1291c69f46d6572b2cf75960dd8975d7ab2176b, b3c95fa508e5dc3da60520eea92a5241095ceef1 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 539bdff832adac9ea653859fa0b6bc62e743329c or d1291c69f46d6572b2cf75960dd8975d7ab2176b or b3c95fa508e5dc3da60520eea92a5241095ceef1 or 65c03e6fc524eb2868abedffd8a4613d78abc288, 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
LinuxLinux729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, 539bdff832adac9ea653859fa0b6bc62e743329c; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, d1291c69f46d6572b2cf75960dd8975d7ab2176b; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, b3c95fa508e5dc3da60520eea92a5241095ceef1; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, 65c03e6fc524eb2868abedffd8a4613d78abc288; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, adb7df8a8f9d788423e161b779764527dd3ec2d0; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, 076b13ee60eb01ed0d140ef261f95534562a3077; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, f211572818ed5bec2b3f5d4e0719ef8699b3c269; 729988507680b2ce934bce61d9ce0ea7b235914c up to, but not including, ed93c6f68a3be06e4e0c331c6e751f462dee3932; and 1 more ranges539bdff832adac9ea653859fa0b6bc62e743329c, d1291c69f46d6572b2cf75960dd8975d7ab2176b, b3c95fa508e5dc3da60520eea92a5241095ceef1, 65c03e6fc524eb2868abedffd8a4613d78abc288, adb7df8a8f9d788423e161b779764527dd3ec2d0, 076b13ee60eb01ed0d140ef261f95534562a3077
LinuxLinux Kernel3.14 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: das16m1: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: /* only irqs 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, and 15 are valid */ if ((1 << it->options[1]) & 0xdcfc) { 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.

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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