#VU92553 Resource exhaustion in Linux kernel - CVE-2010-4668

Vulnerability identifier: #VU92553

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2010-4668

CWE-ID: CWE-400

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 a denial of service (DoS) attack.

The vulnerability exists due to resource exhaustion error within the blk_rq_map_user_iov() function in block/blk-map.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5478755616ae2ef1ce144dded589b62b2a50d575
https://lkml.org/lkml/2010/11/29/68
https://lkml.org/lkml/2010/11/29/70
https://openwall.com/lists/oss-security/2010/11/29/1
https://openwall.com/lists/oss-security/2010/11/30/4
https://openwall.com/lists/oss-security/2010/11/30/7
https://secunia.com/advisories/42890
https://www.kernel.org/pub/linux/kernel/v2.6/testing/ChangeLog-2.6.37-rc7
https://www.redhat.com/support/errata/RHSA-2011-0007.html
https://www.securityfocus.com/bid/45660
https://exchange.xforce.ibmcloud.com/vulnerabilities/64496
https://patchwork.kernel.org/patch/363282/

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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.