CVE-2009-2848
MEDIUM severity · CVSS 5.9 · Improper privilege management
5.9CVSS MEDIUM
Summary
The execve function in the Linux kernel, possibly 2.6.30-rc6 and earlier, does not properly clear the current->clear_child_tid pointer, which allows local users to cause a denial of service (memory corruption) or possibly gain privileges via a clone system call with CLONE_CHILD_SETTID or CLONE_CHILD_CLEARTID enabled, which is not properly handled during thread creation and exit.
Impact & exploitability
Attack vectorLocal
Attack complexity—
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)1%
AV:L/AC:M/Au:N/C:P/I:P/A:C
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://article.gmane.org/gmane.linux.kernel/871942
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00005.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00007.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2010-02/msg00005.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2009-1243.htmlAdvisory
- http://secunia.com/advisories/35983
- http://secunia.com/advisories/36501
- http://secunia.com/advisories/36562