CVE-2017-8925

The omninet_open function in drivers/usb/serial/omninet.c in the Linux kernel before 4.10.4 allows local users to cause a denial of service (tty exhaustion) by leveraging reference count mishandling.

Weakness

The product does not release or incorrectly releases a resource before it is made available for re-use.

Affected Software

Potential Mitigations

• Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
• For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/125.html
• https://cwe.mitre.org/data/definitions/130.html
• https://cwe.mitre.org/data/definitions/131.html
• https://cwe.mitre.org/data/definitions/494.html
• https://cwe.mitre.org/data/definitions/495.html
• https://cwe.mitre.org/data/definitions/496.html
• https://cwe.mitre.org/data/definitions/666.html

References

• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30572418b445d85fcfe6c8fe84c947d2606767d8
• http://www.debian.org/security/2017/dsa-3886
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.4
• http://www.securityfocus.com/bid/98462
• https://github.com/torvalds/linux/commit/30572418b445d85fcfe6c8fe84c947d2606767d8
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=30572418b445d85fcfe6c8fe84c947d2606767d8
• http://www.debian.org/security/2017/dsa-3886
• http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.10.4
• http://www.securityfocus.com/bid/98462
• https://github.com/torvalds/linux/commit/30572418b445d85fcfe6c8fe84c947d2606767d8