linux 2.6.24.7 kernel panic via futex

2011-01-18 / 2011-01-19
Credit: taviso
Risk: Low
Local: Yes
Remote: No
CVE: CVE-2010-3086
CWE: NVD-CWE-DesignError


CVSS Base Score: 4.9/10
Impact Subscore: 6.9/10
Exploitability Subscore: 3.9/10
Exploit range: Local
Attack complexity: Low
Authentication: No required
Confidentiality impact: None
Integrity impact: None
Availability impact: Complete

__futex_atomic_op1, __futex_atomic_op2, and futex_atomic_cmpxchg-_inatomic() macros replaced the LOCK prefix with a NOP instruction. This can cause the exceptions to not match the exception table fault fixup. A local, unprivileged user could use this flaw to cause a denial of service. This is assigned with CVE-2010-3086. https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-3086 http://git.kernel.org/linus/9d55b9923a1b7ea8193b8875c57ec940dc2ff027 Thanks, Eugene

References:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=9d55b9923a1b7ea8193b8875c57ec940dc2ff027
https://bugzilla.redhat.com/show_bug.cgi?id=633170
https://bugzilla.redhat.com/show_bug.cgi?id=429412
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25
http://securitytracker.com/id?1024709
http://marc.info/?l=oss-security&m=128935856605589&w=2
http://kerneltrap.org/mailarchive/linux-kernel/2008/2/6/752194/thread


See this note in RAW Version
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