Improper input validation in Linux kernel - CVE-2014-9731
Published: August 31, 2015 / Updated: July 13, 2017
Vulnerability identifier: #VU92494
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-9731
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper input validation error within the udf_translate_to_linux(), udf_get_filename() and udf_put_filename() functions in fs/udf/unicode.c, within the udf_pc_to_char() and udf_symlink_filler() functions in fs/udf/symlink.c, within the udf_find_entry() function in fs/udf/namei.c, within the udf_readdir() function in fs/udf/dir.c. A local user can gain access to sensitive information.
Affected software
Linux kernel
How to mitigate CVE-2014-9731
Install update from vendor's repository.
External References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00049.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00011.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00021.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.2
- http://www.openwall.com/lists/oss-security/2015/06/03/4
- http://www.securityfocus.com/bid/75001
- https://bugzilla.redhat.com/show_bug.cgi?id=1228220
- https://github.com/torvalds/linux/commit/0e5cc9a40ada6046e6bc3bdfcd0c0d7e4b706b14
- https://source.android.com/security/bulletin/2017-07-01