Description

The shmem_delete_inode function in mm/shmem.c in the tmpfs implementation in the Linux kernel before 2.6.26.1 allows local users to cause a denial of service (system crash) via a certain sequence of file create, remove, and overwrite operations, as demonstrated by the insserv program, related to allocation of "useless pages" and improper maintenance of the i_blocks count.

References

http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.26.y.git;a=commit;h=14fcc23fdc78e9d32372553ccf21758a9bd56fa1

http://lkml.org/lkml/2008/7/26/71

http://secunia.com/advisories/31881

http://secunia.com/advisories/32190

http://secunia.com/advisories/32393

http://www.debian.org/security/2008/dsa-1636

http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.26.1

http://www.redhat.com/support/errata/RHSA-2008-0857.html

http://www.securityfocus.com/bid/31134

http://www.ubuntu.com/usn/usn-659-1

https://exchange.xforce.ibmcloud.com/vulnerabilities/44489

Details

Risk Information

CVSS v2