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Fencer Vulns
high 7.5

CVE-2006-5158 json

The nlmclnt_mark_reclaim in clntlock.c in NFS lockd in Linux kernel before 2.6.16 allows remote attackers to cause a denial of service (pro…

published 2006-10-03 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-5143

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.7%
EPSS 3.7% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

The nlmclnt_mark_reclaim in clntlock.c in NFS lockd in Linux kernel before 2.6.16 allows remote attackers to cause a denial of service (process crash) and deny access to NFS exports via unspecified vectors that trigger a kernel oops (null dereference) and a deadlock.

Patch / fix

  • linux linux_kernel 2.6.16
  • kernel RHEL 4 2.6.9-55.0.2.EL
  • kernel-smp RHEL 4 2.6.9-55.0.2.EL
  • kernel-xenU RHEL 4 2.6.9-55.0.2.EL
  • kernel-hugemem RHEL 4 2.6.9-55.0.2.EL
  • kernel-largesmp RHEL 4 2.6.9-55.0.2.EL

red hat advisories RHSA-2007:0488

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-2006-5158 updated

NFS lockd deadlock

  • Red Hat Enterprise Linux AS version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL Red Hat Enterprise Linux Desktop version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL Red Hat Enterprise Linux ES version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL Red Hat Enterprise Linux WS version 4 kernel 2.6.9-55.0.2.EL, kernel-smp 2.6.9-55.0.2.EL, kernel-xenU 2.6.9-55.0.2.EL, kernel-hugemem 2.6.9-55.0.2.EL, kernel-largesmp 2.6.9-55.0.2.EL
    fixed: vendor fix RHSA-2007:0488

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

3.72% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
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.