Improper locking in Linux kernel

1) Improper locking

EUVDB-ID: #VU95762

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-3106

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

Race condition in Linux 2.6, when threads are sharing memory mapping via CLONE_VM (such as linuxthreads and vfork), might allow local users to cause a denial of service (deadlock) by triggering a core dump while waiting for a thread that has just performed an exec.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://www.ubuntu.com/usn/usn-199-1
https://www.debian.org/security/2005/dsa-922
https://secunia.com/advisories/18056
https://www.securityfocus.com/bid/15049
https://www.redhat.com/support/errata/RHSA-2006-0101.html
https://secunia.com/advisories/18510
https://secunia.com/advisories/17141
https://www.mandriva.com/security/advisories?name=MDKSA-2006:072
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9108
https://www.securityfocus.com/archive/1/427980/100/0/threaded
https://linux.bkbits.net:8080/linux-2.6/diffs/fs/exec.c%401.156?nav=index.html%7Csrc/%7Csrc/fs%7Chist/fs/exec.c

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.