Information disclosure in Linux kernel - CVE-2013-4516
Published: November 12, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42385
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4516
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The mp_get_count function in drivers/staging/sb105x/sb_pci_mp.c in the Linux kernel before 3.12 does not initialize a certain data structure, which allows local users to obtain sensitive information from kernel stack memory via a TIOCGICOUNT ioctl call.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
linux-lts-saucy (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-raring (Ubuntu package)
linux-lts-saucy (Ubuntu package)
How to mitigate CVE-2013-4516
Install update from vendor's website.
linux (Ubuntu package) - addressed in versions 3.8.0-35.50, 3.11.0-15.23
linux-lts-raring (Ubuntu package) - update to 3.8.0-35.50~precise1
linux-lts-saucy (Ubuntu package) - update to 3.11.0-15.23~precise1
linux-lts-raring (Ubuntu package) - update to 3.8.0-35.50~precise1
linux-lts-saucy (Ubuntu package) - update to 3.11.0-15.23~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a8b33654b1e3b0c74d4a1fed041c9aae50b3c427
- http://www.openwall.com/lists/oss-security/2013/11/04/22
- http://www.ubuntu.com/usn/USN-2069-1
- http://www.ubuntu.com/usn/USN-2070-1
- http://www.ubuntu.com/usn/USN-2073-1
- http://www.ubuntu.com/usn/USN-2075-1
- https://github.com/torvalds/linux/commit/a8b33654b1e3b0c74d4a1fed041c9aae50b3c427
- https://www.kernel.org/pub/linux/kernel/v3.x/patch-3.12.bz2