Vulnerability CVE-2010-2226
Published: 2010-09-03   Modified: 2012-02-13

Description:
The xfs_swapext function in fs/xfs/xfs_dfrag.c in the Linux kernel before 2.6.35 does not properly check the file descriptors passed to the SWAPEXT ioctl, which allows local users to leverage write access and obtain read access by swapping one file into another file.

See advisories in our WLB2 database:
Topic
Author
Date
Low
linux kernel 2.6.34 xfs swapext ioctl issue
Eugene Teo
13.09.2010

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
1.9/10
2.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Linux -> Kernel 
Linux -> Linux kernel 

 References:
http://archives.free.net.ph/message/20100616.130710.301704aa.en.html
http://archives.free.net.ph/message/20100616.135735.40f53a32.en.html
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=1817176a86352f65210139d4c794ad2d19fc6b63
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://marc.info/?l=oss-security&m=127677135609357&w=2
http://marc.info/?l=oss-security&m=127687486331790&w=2
http://www.debian.org/security/2010/dsa-2094
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35
http://www.mandriva.com/security/advisories?name=MDVSA-2010:198
http://www.redhat.com/support/errata/RHSA-2010-0610.html
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.securityfocus.com/bid/40920
http://www.ubuntu.com/usn/USN-1000-1
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.vupen.com/english/advisories/2011/0298
https://bugzilla.redhat.com/show_bug.cgi?id=605158
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