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CVE-2006-5173

Status Candidate

Overview

Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allows local users to cause a denial of service (process crash), as demonstrated using a process that sets the Alignment Check flag (EFLAGS 0x40000), which triggers a SIGBUS in other processes that have an unaligned access.

Related Files

Mandriva Linux Security Advisory 2007.002
Posted Jan 3, 2007
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory - Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel. The Linux kernel does not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which could allow a local user to cause a Denial of Service (process crash). The seqfile handling in the 2.6 kernel up to 2.6.18 allows local users to cause a DoS (hang or oops) via unspecified manipulations that trigger an infinite loop while searching for flowlabels. An integer overflow in the 2.6 kernel prior to 2.6.18.4 could allow a local user to execute arbitrary code via a large maxnum value in an ioctl request. A race condition in the ISO9660 filesystem handling could allow a local user to cause a DoS (infinite loop) by mounting a crafted ISO9660 filesystem containing malformed data structures. A vulnerability in the bluetooth support could allow for overwriting internal CMTP and CAPI data structures via malformed packets.

tags | advisory, denial of service, overflow, arbitrary, kernel, local, vulnerability
systems | linux, mandriva
advisories | CVE-2006-5757, CVE-2006-5751, CVE-2006-5173, CVE-2006-5619, CVE-2006-6106
MD5 | c52590a8885f06097dd021687a1f9561
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