Improper input validation in Linux kernel

1) Improper input validation

EUVDB-ID: #VU95636

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2005-0977

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to perform service disruption.

The shmem_nopage function in shmem.c for the tmpfs driver in Linux kernel 2.6 does not properly verify the address argument, which allows local users to cause a denial of service (kernel crash) via an invalid address.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

External links

http://linux.bkbits.net:8080/linux-2.6/cset@420551fbRlv9-QG6Gw9Lw_bKVfPSsg
http://lkml.org/lkml/2005/2/5/111
http://www.redhat.com/support/errata/RHSA-2005-366.html
http://www.securityfocus.com/archive/1/427980/100/0/threaded
http://www.securityfocus.com/bid/12970
http://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10400
http://usn.ubuntu.com/103-1/

Q & A

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.