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Fencer Vulns
low 1.9

CVE-2007-3850 json

The eHCA driver in Linux kernel 2.6 before 2.6.22, when running on PowerPC, does not properly map userspace resources, which allows local u…

published 2007-10-23 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3834

cvss
1.9
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

The eHCA driver in Linux kernel 2.6 before 2.6.22, when running on PowerPC, does not properly map userspace resources, which allows local users to read portions of physical address space.

Patch / fix

  • kernel RHEL 5 2.6.18-8.1.15.el5
  • kernel-PAE RHEL 5 2.6.18-8.1.15.el5
  • kernel-xen RHEL 5 2.6.18-8.1.15.el5
  • kernel-kdump RHEL 5 2.6.18-8.1.15.el5
  • kernel-debuginfo-common RHEL 5 2.6.18-8.1.15.el5

red hat advisories RHSA-2007:0940

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2007-3850 updated

kernel LTC31426-4k page mapping support for userspace in 64k kernels

  • Red Hat Enterprise Linux (v. 5 server) kernel 2.6.18-8.1.15.el5, kernel-PAE 2.6.18-8.1.15.el5, kernel-xen 2.6.18-8.1.15.el5, kernel-kdump 2.6.18-8.1.15.el5, kernel-debuginfo-common 2.6.18-8.1.15.el5 Red Hat Enterprise Linux Desktop (v. 5 client) kernel 2.6.18-8.1.15.el5, kernel-PAE 2.6.18-8.1.15.el5, kernel-xen 2.6.18-8.1.15.el5, kernel-kdump 2.6.18-8.1.15.el5, kernel-debuginfo-common 2.6.18-8.1.15.el5
    fixed: vendor fix RHSA-2007:0940

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.