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Fencer Vulns
low 1.2

CVE-2003-0462 json

A race condition in the way env_start and env_end pointers are initialized in the execve system call and used in fs/proc/base.c on Linux 2.…

published 2003-07-25 23 y ago modified 2026-06-16 4 mo ago also EUVD-2003-0456

cvss
1.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits
1
Exploit-DB

Summary

A race condition in the way env_start and env_end pointers are initialized in the execve system call and used in fs/proc/base.c on Linux 2.4 allows local users to cause a denial of service (crash).

Patch / fix

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-2003-0462 updated

security flaw

  • Red Hat Enterprise Linux ES version 2.1 Red Hat Enterprise Linux WS version 2.1
    fixed: vendor fix RHSA-2003:239
  • Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3 Red Hat Linux 8.0 Red Hat Linux 9
    fixed: vendor fix RHSA-2003:238
  • Red Hat Linux Advanced Workstation 2.1
    fixed: vendor fix RHSA-2003:198

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

Timeline

  1. First public exploit (EDB-22840)
  2. Published

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-22840 Linux Kernel 2.4 - SUID 'execve()' System Call Race Condition Executable File Read local, 2003-06-26

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.