Description
The CRC32C feature in the Btrfs implementation in the Linux kernel before 3.8-rc1 allows local users to cause a denial of service (prevention of file creation) by leveraging the ability to write to a directory important to the victim, and creating a file with a crafted name that is associated with a specific CRC32C hash value.
Exploits (1)
exploitdb
WORKING POC
VERIFIED
by Pascal Junod · pythondoslinux
https://www.exploit-db.com/exploits/38132
References (10)
Core 10
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2017-1
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1947-1
Various Sources x_refsource_misc
http://crypto.junod.info/2012/12/13/hash-dos-and-btrfs/
Patch x_refsource_confirm
http://www.kernel.org/pub/linux/kernel/v3.x/testing/patch-3.8-rc1.bz2
Exploit, Patch x_refsource_confirm
https://github.com/torvalds/linux/commit/9c52057c698fb96f8f07e7a4bcf4801a092bda89
Patch x_refsource_confirm
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=9c52057c698fb96f8f07e7a4bcf4801a092bda89
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1944-1
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1945-1
Mailing List mailing-list
x_refsource_mlist
http://openwall.com/lists/oss-security/2012/12/13/20
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-1946-1
Scores
EPSS
0.0011
EPSS Percentile
28.7%
Details
CWE
CWE-310
Status
published
Products (44)
linux/linux_kernel
3.0 rc1 (7 CPE variants)
linux/linux_kernel
3.0.1
linux/linux_kernel
3.0.2
linux/linux_kernel
3.0.3
linux/linux_kernel
3.0.4
linux/linux_kernel
3.0.5
linux/linux_kernel
3.0.6
linux/linux_kernel
3.0.7
linux/linux_kernel
3.0.8
linux/linux_kernel
3.0.9
... and 34 more
Published
Feb 18, 2013
Tracked Since
Feb 18, 2026