CVE Vulnerabilities

CVE-2009-2768

NULL Pointer Dereference

Published: Aug 14, 2009 | Modified: Feb 09, 2024
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu
LOW

The load_flat_shared_library function in fs/binfmt_flat.c in the flat subsystem in the Linux kernel before 2.6.31-rc6 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by executing a shared flat binary, which triggers an access of an uninitialized cred pointer.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Linux_kernel Linux * 2.6.31 (excluding)
Linux_kernel Linux 2.6.31-rc1 (including) 2.6.31-rc1 (including)
Linux_kernel Linux 2.6.31-rc2 (including) 2.6.31-rc2 (including)
Linux_kernel Linux 2.6.31-rc3 (including) 2.6.31-rc3 (including)
Linux_kernel Linux 2.6.31-rc4 (including) 2.6.31-rc4 (including)
Linux_kernel Linux 2.6.31-rc5 (including) 2.6.31-rc5 (including)
Linux Ubuntu upstream *

Potential Mitigations

References