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Public Date:
515423: CVE-2009-2848 kernel: execve: must clear current->clear_child_tid

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2009-2848 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

Base Score 7.2
Base Metrics AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 3 (kernel) RHSA-2009:1550 2009-11-03
MRG Grid for RHEL 5 Server (kernel-rt) RHSA-2009:1239 2009-09-01
Red Hat Enterprise Linux 4 (kernel) RHSA-2009:1438 2009-09-15
Red Hat Enterprise Linux 5 (kernel) RHSA-2009:1243 2009-09-02
Red Hat Enterprise Linux EUS (v. 5.3 server) (kernel) RHSA-2009:1466 2009-09-29
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