Improper locking in Linux kernel

1) Improper locking

EUVDB-ID: #VU99781

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-2005-3107

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform service disruption.

fs/exec.c in Linux 2.6, when 1 thread is tracing another thread that shares the same memory map, might allow local users to cause a denial of service (deadlock) by forcing a core dump when the traced thread is in the TASK_TRACED state.

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://linux.bkbits.net:8080/linux-2.6/diffs/fs/exec.c@1.155?nav=index.html|src/|src/fs|hist/fs/exec.c
https://secunia.com/advisories/17141
https://secunia.com/advisories/18056
https://secunia.com/advisories/21136
https://secunia.com/advisories/21983
https://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
https://www.debian.org/security/2005/dsa-922
https://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.11-rc1/2.6.11-rc1-mm1/broken-out/fix-coredump_wait-deadlock-with-ptracer-tracee-on-shared-mm.patch
https://www.mandriva.com/security/advisories?name=MDKSA-2006:072
https://www.redhat.com/support/errata/RHSA-2005-420.html
https://www.redhat.com/support/errata/RHSA-2006-0437.html
https://www.securityfocus.com/bid/15049
https://www.ubuntu.com/usn/usn-199-1
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11473

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.