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4.4

Linux kernel Sbus driver lets local user run code

CVE-2004-2731 · published 21 years ago
Summary

The Sbus PROM driver in the Linux kernel (versions 2.4 up to 2.4.27 and 2.6 up to 2.6.7) can be tricked into miscalculating memory sizes. This allows someone with local access to run their own programs with the kernel's privileges. Apply the latest kernel updates or patches that fix the driver to remove the risk.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
linux linux_kernel 2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
2.4.5
2.4.6
2.4.7
2.4.8
2.4.9
2.4.9_pre5
2.4.10
42 more version ranges
cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:*
Original advisory text
Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute a...
Multiple integer overflows in Sbus PROM driver (drivers/sbus/char/openprom.c) for the Linux kernel 2.4.x up to 2.4.27, 2.6.x up to 2.6.7, and possibly later versions, allow local users to execute arbitrary code by specifying (1) a small buffer size to the copyin_string function or (2) a negative buffer size to the copyin function.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
4.4 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-189Numeric Errors
Timeline
Published31 Dec 2004
Updated4 Nov 2026
First seen29 Sep 2026
Sources
CVE-2004-2731 · NVD
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