Null pointer dereference

2009-10-3020:30:00

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7.2 High

AI Score

Confidence

Low

0.043 Low

EPSS

Percentile

92.4%

JSON

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.

CPENameOperatorVersion
linux_kerneleq2.6.27.29
linux_kerneleq2.6.27.12
linux_kerneleq2.6.20.6
linux_kerneleq2.6.20.9
linux_kerneleq2.6.11
linux_kerneleq2.6.23.4
linux_kerneleq2.6.22.15
linux_kerneleq2.6.16.16
linux_kerneleq2.6.18.7
linux_kerneleq2.6.17.12

Name	Operator	Version
linux_kernel	eq	2.6.27.29
linux_kernel	eq	2.6.27.12
linux_kernel	eq	2.6.20.6
linux_kernel	eq	2.6.20.9
linux_kernel	eq	2.6.11
linux_kernel	eq	2.6.23.4
linux_kernel	eq	2.6.22.15
linux_kernel	eq	2.6.16.16
linux_kernel	eq	2.6.18.7
linux_kernel	eq	2.6.17.12