1. Home
  2. CVE Database
  3. CVE-2009-3623
HIGH · 7.8

CVE-2009-3623

The lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authe...

Vulnerability Description

The lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authentication flavor, which allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an NFSv4 mount request.

CVSS Score

7.8

HIGH

AV:N/AC:L/Au:N/C:N/I:N/A:C
Confidentiality
NONE
Integrity
NONE
Availability
COMPLETE

Affected Products

VendorProductVersions
LinuxLinux Kernel<= 2.6.31.1

Related Weaknesses (CWE)

CWE-287

References

FAQ

What is CVE-2009-3623?

CVE-2009-3623 is a vulnerability with a CVSS score of 7.8 (HIGH). The lookup_cb_cred function in fs/nfsd/nfs4callback.c in the nfsd4 subsystem in the Linux kernel before 2.6.31.2 attempts to access a credentials cache even when a client specifies the AUTH_NULL authe...

How severe is CVE-2009-3623?

CVE-2009-3623 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2009-3623?

Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.