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Debian DSA-1809-1 : linux-2.6 - denial of service, privilege escalation

Description

Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service, or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-1630 Frank Filz discovered that local users may be able to execute files without execute permission when accessed via an nfs4 mount. - CVE-2009-1633 Jeff Layton and Suresh Jayaraman fixed several buffer overflows in the CIFS filesystem which allow remote servers to cause memory corruption. - CVE-2009-1758 Jan Beulich discovered an issue in Xen where local guest users may cause a denial of service (oops). This update also fixes a regression introduced by the fix for CVE-2009-1184 in 2.6.26-15lenny3. This prevents a boot time panic on systems with SELinux enabled.


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