CVE-2011-2497

Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux kernel before 3.0 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a small command-size value within the command header of a Logical Link Control and Adaptation Protocol (L2CAP) configuration request, leading to a buffer overflow.

Weakness

The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.

Affected Software

References

• http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=7ac28817536797fd40e9646452183606f9e17f71
• http://marc.info/?l=linux-kernel\u0026m=130891911909436\u0026w=2
• http://securityreason.com/securityalert/8359
• http://www.kernel.org/pub/linux/kernel/v3.0/ChangeLog-3.0
• http://www.openwall.com/lists/oss-security/2011/06/24/9
• http://www.openwall.com/lists/oss-security/2011/06/27/3
• http://www.osvdb.org/74679
• http://www.securityfocus.com/bid/48472
• https://bugzilla.redhat.com/show_bug.cgi?id=716805