Improper locking in Linux kernel

1) Improper locking

EUVDB-ID: #VU99785

Risk: Low

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

CVE-ID: CVE-2005-0529

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

Linux kernel 2.6.10 and 2.6.11rc1-bk6 uses different size types for offset arguments to the proc_file_read and locks_read_proc functions, which leads to a heap-based buffer overflow when a signed comparison causes negative integers to be used in a positive context.

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.guninski.com/where_do_you_want_billg_to_go_today_3.html
https://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000930
https://www.novell.com/linux/security/advisories/2005_18_kernel.html
https://www.redhat.com/support/errata/RHSA-2005-366.html
https://marc.info/?l=full-disclosure&m=110846727602817&w=2
https://marc.info/?l=bugtraq&m=111091402626556&w=2
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8994
https://linux.bkbits.net:8080/linux-2.6/cset%404201818eC6aMn0x3GY_9rw3ueb2ZWQ

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.