Linux Kernel 3.7.4 evm NULL pointer dereference

2013-02-22 / 2013-02-24

Credit: P J P

Risk: Medium

Local: Yes

Remote: No

CVE: CVE-2013-0313

CWE: N/A

CVSS Base Score: 6.2/10

Impact Subscore: 10/10

Exploitability Subscore: 1.9/10

Exploit range: Local

Attack complexity: High

Authentication: No required

Confidentiality impact: Complete

Integrity impact: Complete

Availability impact: Complete

Linux kernel built with Extended Verification Module(EVM) and configured properly, is vulnerable to a NULL pointer de-reference flaw, caused by accessing extended attribute routines of sockfs inode object.
An unprivileged user/program could use this to crash the kernel, resulting in DoS.
Upstream fix:
-> https://git.kernel.org/linus/a67adb997419fb53540d4a4f79c6471c60bc69b6
Reference:
-> https://bugzilla.redhat.com/show_bug.cgi?id=913266

References:

https://bugzilla.redhat.com/show_bug.cgi?id=913266

https://git.kernel.org/linus/a67adb997419fb53540d4a4f79c6471c60bc69b6

See this note in RAW Version

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Linux Kernel 3.7.4 evm NULL pointer dereference

References:

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