CVE-2015-8952

Description

The mbcache feature in the ext2 and ext4 filesystem implementations in the Linux kernel before 4.6 mishandles xattr block caching, which allows local users to cause a denial of service (soft lockup) via filesystem operations in environments that use many attributes, as demonstrated by Ceph and Samba.

References

https://usn.ubuntu.com/3582-2/

https://usn.ubuntu.com/3582-1/

https://lwn.net/Articles/668718/

https://github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac

https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee

https://github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272

https://bugzilla.redhat.com/show_bug.cgi?id=1360968

https://bugzilla.kernel.org/show_bug.cgi?id=107301

http://www.openwall.com/lists/oss-security/2016/08/25/4

http://www.openwall.com/lists/oss-security/2016/08/22/2

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9a61eb4e2471c56a63cd804c7474128138c38ac

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be0726d33cb8f411945884664924bed3cb8c70ee

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82939d7999dfc1f1998c4b1c12e2f19edbdff272

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3