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Fencer Vulns
low 1.2

CVE-2004-0814 json

Multiple race conditions in the terminal layer in Linux 2.4.x, and 2.6.x before 2.6.9, allow (1) local users to obtain portions of kernel d…

published 2004-10-28 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0812

cvss
1.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

Multiple race conditions in the terminal layer in Linux 2.4.x, and 2.6.x before 2.6.9, allow (1) local users to obtain portions of kernel data via a TIOCSETD ioctl call to a terminal interface that is being accessed by another thread, or (2) remote attackers to cause a denial of service (panic) by switching from console to PPP line discipline, then quickly sending data that is received during the switch.

Patch / fix

  • kernel RHEL 3 2.4.21-27.0.4.EL
  • kernel-smp RHEL 3 2.4.21-27.0.4.EL
  • kernel-BOOT RHEL 3 2.4.21-27.0.4.EL
  • kernel-source RHEL 3 2.4.21-27.0.4.EL
  • kernel-hugemem RHEL 3 2.4.21-27.0.4.EL
  • kernel-unsupported RHEL 3 2.4.21-27.0.4.EL
  • kernel-smp-unsupported RHEL 3 2.4.21-27.0.4.EL
  • kernel-hugemem-unsupported RHEL 3 2.4.21-27.0.4.EL

red hat advisories RHSA-2005:293

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-2004-0814 updated

security flaw

  • Red Hat Desktop version 3 kernel 2.4.21-27.0.4.EL, kernel-smp 2.4.21-27.0.4.EL, kernel-BOOT 2.4.21-27.0.4.EL, kernel-source 2.4.21-27.0.4.EL, kernel-hugemem 2.4.21-27.0.4.EL, kernel-unsupported 2.4.21-27.0.4.EL, +2 more Red Hat Enterprise Linux AS version 3 kernel 2.4.21-27.0.4.EL, kernel-smp 2.4.21-27.0.4.EL, kernel-BOOT 2.4.21-27.0.4.EL, kernel-source 2.4.21-27.0.4.EL, kernel-hugemem 2.4.21-27.0.4.EL, kernel-unsupported 2.4.21-27.0.4.EL, +2 more Red Hat Enterprise Linux ES version 3 kernel 2.4.21-27.0.4.EL, kernel-smp 2.4.21-27.0.4.EL, kernel-BOOT 2.4.21-27.0.4.EL, kernel-source 2.4.21-27.0.4.EL, kernel-hugemem 2.4.21-27.0.4.EL, kernel-unsupported 2.4.21-27.0.4.EL, +2 more Red Hat Enterprise Linux WS version 3 kernel 2.4.21-27.0.4.EL, kernel-smp 2.4.21-27.0.4.EL, kernel-BOOT 2.4.21-27.0.4.EL, kernel-source 2.4.21-27.0.4.EL, kernel-hugemem 2.4.21-27.0.4.EL, kernel-unsupported 2.4.21-27.0.4.EL, +2 more
    fixed: vendor fix RHSA-2005:293

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

0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 1.2 AV:L/AC:H/Au:N/C:N/I:N/A:P

Classification

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.