CVE-2012-0058

The kiocb_batch_free function in fs/aio.c in the Linux kernel before 3.2.2 allows local users to cause a denial of service (OOPS) via vectors that trigger incorrect iocb management.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Potential Mitigations

• Mitigation of resource exhaustion attacks requires that the target system either:

• The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

• The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/147.html
• https://cwe.mitre.org/data/definitions/227.html
• https://cwe.mitre.org/data/definitions/492.html

References

• http://marc.info/?l=bugtraq\u0026m=139447903326211\u0026w=2
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2
• http://www.openwall.com/lists/oss-security/2012/01/18/7
• http://www.securitytracker.com/id?1027085
• https://bugzilla.redhat.com/show_bug.cgi?id=782696
• https://github.com/torvalds/linux/commit/802f43594d6e4d2ac61086d239153c17873a0428
• http://marc.info/?l=bugtraq\u0026m=139447903326211\u0026w=2
• http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2
• http://www.openwall.com/lists/oss-security/2012/01/18/7
• http://www.securitytracker.com/id?1027085
• https://bugzilla.redhat.com/show_bug.cgi?id=782696
• https://github.com/torvalds/linux/commit/802f43594d6e4d2ac61086d239153c17873a0428