MEDIUM
kernel/trace/ftrace.c in the Linux kernel before 2.6.35.5, when debugfs is enabled, does not properly handle interaction between mutex possession and llseek operations, which allows local users to cause a denial of service (NULL pointer dereference and outage of all function tracing files) via an lseek call on a file descriptor associated with the set_ftrace_filter file.
http://lists.opensuse.org/opensuse-security-announce/2010-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://secunia.com/advisories/42758
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.35.5
http://www.redhat.com/support/errata/RHSA-2010-0842.html
http://www.securityfocus.com/bid/43684
http://www.ubuntu.com/usn/USN-1041-1
http://www.vupen.com/english/advisories/2011/0070
Source: MITRE
Published: 2010-09-30
Updated: 2020-08-13
Type: CWE-476
Base Score: 4.9
Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C
Impact Score: 6.9
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 5.5
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact Score: 3.6
Exploitability Score: 1.8
Severity: MEDIUM