Vulnerability identifier: #VU92861
Vulnerability risk: Low
CVSSv3.1: 3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Local
Exploit availability: Yes
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a local user to gain access to sensitive information.
The vmsplice_to_user function in fs/splice.c in the Linux kernel 2.6.22 through 2.6.24 does not validate a certain userspace pointer before dereference, which might allow local users to access arbitrary kernel memory locations.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel:
External links
http://isec.pl/vulnerabilities/isec-0026-vmsplice_to_kernel.txt
http://secunia.com/advisories/28835
http://secunia.com/advisories/28896
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.24.1
http://www.securityfocus.com/archive/1/487982/100/0/threaded
http://www.securityfocus.com/bid/27704
http://www.securityfocus.com/bid/27799
http://www.vupen.com/english/advisories/2008/0487/references
http://bugzilla.redhat.com/show_bug.cgi?id=431206
http://www.redhat.com/archives/fedora-package-announce/2008-February/msg00254.html
http://www.redhat.com/archives/fedora-package-announce/2008-February/msg00255.html
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.