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Fencer Vulns
medium 4.6

CVE-2002-1826 json

grsecurity 1.9.4 for Linux kernel 2.4.18 allows local users to bypass read-only permissions by using mmap to directly map /dev/mem or /dev/…

published 2002-12-31 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1805

cvss
4.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 63%
public exploits
1
Exploit-DB

Summary

grsecurity 1.9.4 for Linux kernel 2.4.18 allows local users to bypass read-only permissions by using mmap to directly map /dev/mem or /dev/kmem to kernel memory.

Timeline

  1. First public exploit (EDB-21458)
  2. Published

Exploit prediction

1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-21458 Grsecurity Kernel Patch 1.9.4 (Linux Kernel) - Memory Protection local, 2002-05-17
  • securityfocus.com http://www.securityfocus.com/bid/4762 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

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.