Description
The (1) real_lookup and (2) __lookup_hash functions in fs/namei.c in the vfs implementation in the Linux kernel before 2.6.25.15 do not prevent creation of a child dentry for a deleted (aka S_DEAD) directory, which allows local users to cause a denial of service ("overflow" of the UBIFS orphan area) via a series of attempted file creations within deleted directories.
References (32)
Core 32
Core References
Patch, Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2008/dsa-1630
Broken Link vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2008-0885.html
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/637-1/
Exploit, Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://lkml.org/lkml/2008/7/2/83
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/32190
Third Party Advisory vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6551
Patch, Third Party Advisory vendor-advisory
x_refsource_debian
http://www.debian.org/security/2008/dsa-1636
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31614
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31881
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/32104
Patch x_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=d70b67c8bc72ee23b55381bd6a884f4796692f77
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31551
Broken Link vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2008/2430
Broken Link vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2008-0857.html
Broken Link vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2009-0014.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00001.html
Third Party Advisory, VDB Entry vdb-entry
x_refsource_sectrack
http://www.securitytracker.com/id?1020739
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/33280
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/33556
Patch, Third Party Advisory, VDB Entry vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/30647
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/32023
Issue Tracking, Patch, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=457858
Broken Link vendor-advisory
x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2008:220
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/32344
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/44410
Broken Link vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2008-0973.html
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31836
Broken Link x_refsource_confirm
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.15
Broken Link vendor-advisory
x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2008-0787.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
Broken Link third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/33201
Third Party Advisory vdb-entry
signature
x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10744
Scores
CVSS v3
5.5
EPSS
0.0008
EPSS Percentile
22.8%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-120
Status
published
Products (8)
canonical/ubuntu_linux
6.06
canonical/ubuntu_linux
7.04
canonical/ubuntu_linux
7.10
canonical/ubuntu_linux
8.04
debian/debian_linux
4.0
linux/linux_kernel
< 2.6.25.15
suse/suse_linux_enterprise_desktop
10 sp1
suse/suse_linux_enterprise_server
10 sp1
Published
Aug 12, 2008
Tracked Since
Feb 18, 2026