#VU95636 Improper input validation in Linux kernel - CVE-2005-0977

Vulnerability identifier: #VU95636

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-0977

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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

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

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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.