CVE-2011-2497: linux linux_kernel Integer Underflow (Wrap or Wraparound)

Vulnerability summary

CVE-2011-2497 is a high (CVSS 8.3) Integer Underflow (Wrap or Wraparound) vulnerability in linux linux_kernel. EPSS estimates a 1.97% chance of exploitation in the next 30 days, higher than 80.4% of scored vulnerabilities.

Timeline

1. 29-08-2011
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-191Integer Underflow (Wrap or Wraparound)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.