What is CVE-2006-5158?

CVE-2006-5158 is a high-severity vulnerability in Linux Kernel, classified under Improper Locking. CVSS score: 7.5/10. Published 2006-10-05.

How severe is CVE-2006-5158?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linux Kernel

CVE-2006-5158

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.

Published 2006-10-05 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.037 (89.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.036 · newest: 0.037 · change: +0.001

Affected products

Linux Kernel
Canonical Ubuntu Linux — versions 5.10, 6.06, 6.10
Red Hat Enterprise Linux Desktop — versions 4.0
Red Hat Enterprise Linux Eus — versions 4.5
Red Hat Enterprise Linux Server — versions 4.0
Red Hat Enterprise Linux Workstation — versions 4.0

Weakness classification (CWE)

CWE-667 — Improper Locking

References

oval.cisecurity.org/repository/search/definition/oval:org.mitre.oval:def:10128 (Broken Link, signature, vdb-entry)
marc.info/ (mailing-list, Patch, Mailing List)
secunia.com/advisories/23361 (Broken Link, Vendor Advisory, third-party-advisory)
secunia.com/advisories/26289 (Broken Link, third-party-advisory)
www.mandriva.com/security/advisories (vendor-advisory, Patch, Third Party Advisory)
secunia.com/advisories/25838 (Broken Link, Vendor Advisory, third-party-advisory)
secunia.com/advisories/23384 (Broken Link, Vendor Advisory, third-party-advisory)
www.kernel.org/git/ (Broken Link)
marc.info/ (mailing-list, Mailing List)
secunia.com/advisories/23752 (Broken Link, Vendor Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2006-5158?: CVE-2006-5158 is a high-severity vulnerability in Linux Kernel, classified under Improper Locking. CVSS score: 7.5/10. Published 2006-10-05.
How severe is CVE-2006-5158?: High severity. CVSS v3 base score is 7.5 out of 10.