{"id":"CVE-2015-8952","details":"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.","modified":"2026-04-10T03:46:35.443138Z","published":"2016-10-16T21:59:01Z","references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/08/22/2"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2016/08/25/4"},{"type":"ADVISORY","url":"https://bugzilla.kernel.org/show_bug.cgi?id=107301"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1360968"},{"type":"ADVISORY","url":"https://github.com/torvalds/linux/commit/82939d7999dfc1f1998c4b1c12e2f19edbdff272"},{"type":"ADVISORY","url":"https://lwn.net/Articles/668718/"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=82939d7999dfc1f1998c4b1c12e2f19edbdff272"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=be0726d33cb8f411945884664924bed3cb8c70ee"},{"type":"FIX","url":"http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f9a61eb4e2471c56a63cd804c7474128138c38ac"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2016/08/25/4"},{"type":"FIX","url":"https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee"},{"type":"REPORT","url":"https://bugzilla.kernel.org/show_bug.cgi?id=107301"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1360968"},{"type":"REPORT","url":"https://github.com/torvalds/linux/commit/be0726d33cb8f411945884664924bed3cb8c70ee"},{"type":"REPORT","url":"https://github.com/torvalds/linux/commit/f9a61eb4e2471c56a63cd804c7474128138c38ac"},{"type":"WEB","url":"https://usn.ubuntu.com/3582-1/"},{"type":"WEB","url":"https://usn.ubuntu.com/3582-2/"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}