Vulnerabilities > CVE-2022-49451 - Integer Overflow or Wraparound vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: arm_scmi: Fix list protocols enumeration in the base protocol While enumerating protocols implemented by the SCMI platform using BASE_DISCOVER_LIST_PROTOCOLS, the number of returned protocols is currently validated in an improper way since the check employs a sum between unsigned integers that could overflow and cause the check itself to be silently bypassed if the returned value 'loop_num_ret' is big enough. Fix the validation avoiding the addition.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Forced Integer Overflow This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.
References
- https://git.kernel.org/stable/c/1052f22e127d0c34c3387bb389424ba1c61491ff
- https://git.kernel.org/stable/c/2ccfcd7a09c826516edcfe464b05071961aada3f
- https://git.kernel.org/stable/c/444a2d27fe9867d0da4b28fc45b793f32e099ab8
- https://git.kernel.org/stable/c/6e7978695f4a6cbd83616b5a702b77fa2087b247
- https://git.kernel.org/stable/c/8009120e0354a67068e920eb10dce532391361d0
- https://git.kernel.org/stable/c/98342148a8cd242855d7e257f298c966c96dba9f
- https://git.kernel.org/stable/c/b0e4bafac8963c2d85ee18d3d01f393735acceec