What’s Vulnerable › Vulnerabilities

CVE-2006-5158

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2006-10-05 · updated 2026-06-16
• Weakness: CWE-667

Description

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.

Affected products

• Canonical Ubuntu Linux: 5.10, 6.06, 6.10
• Linux kernel: before 2.6.16 — fixed in 2.6.16
• RedHat Enterprise Linux Desktop: 4.0
• RedHat Enterprise Linux Eus: 4.5
• RedHat Enterprise Linux Server: 4.0
• RedHat Enterprise Linux Workstation: 4.0

How to fix

Upgrade to a fixed version: Linux kernel 2.6.16. Check the vendor advisory for mitigations.

References

• http://marc.info/?l=linux-kernel&m=113476665626446&w=2
• http://marc.info/?l=linux-kernel&m=113494474208973&w=2
• http://rhn.redhat.com/errata/RHSA-2007-0488.html
• http://secunia.com/advisories/23361
• http://secunia.com/advisories/23384
• http://secunia.com/advisories/23752
• http://secunia.com/advisories/25838
• http://secunia.com/advisories/26289
• http://support.avaya.com/elmodocs2/security/ASA-2007-287.htm
• http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9b5b1f5bf9dcdb6f23abf65977a675eb4deba3c0
• http://www.mandriva.com/security/advisories?name=MDKSA-2007:012
• http://www.novell.com/linux/security/advisories/2006_57_kernel.html

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