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Linux Kernel Multiple Vulnerabilities
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Secunia Advisory:
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SA36763
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Release Date:
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2009-09-17
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Last Update:
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2009-10-30
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Popularity:
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1,425 views
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Critical:
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Less critical
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Impact:
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Security Bypass
Privilege escalation
DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| OS: | Linux Kernel 2.6.x
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Secunia CVSS-2 Score:
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| Advisory Content (Page 1 of 3) | [ 1 ] [ 2 ] [ 3 ] | |
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Description:
Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to bypass certain security restrictions, cause a DoS (Denial of Service), and gain escalated privileges and by malicious people to cause a DoS.
1) An error exists within the "find_ie()" function in net/wireless/scan.c, which can be exploited to trigger an infinite loop by sending specially crafted packets.
Note: This does not affect versions prior to 2.6.30.
2) A boundary error within the "perf_copy_attr()" function in kernel/perf_counter.c can be exploited to cause a buffer overflow by e.g. passing specially crafted data via the "perf_counter_open()" syscall.
Note: This does not affect versions prior to 2.6.31.
3) The "kvm_emulate_hypercall()" function in arch/x86/kvm/x86.c does not reject MMU hypercalls from unprivileged guests, which can be exploited to e.g. crash a guest kernel.
4) The "handle_dr()" function in arch/x86/kvm/vmx.c does not properly check the current privilege level before emulating access to debug registers, which can be exploited to e.g. set hardware breakpoints from userspace.
Change Page:
[ 1 ] [ 2 ] [ 3 ]
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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