CVE-2026-43349
Description
A flaw was found in the Linux kernel's Flash-Friendly File System (f2fs). This vulnerability allows a local attacker to cause an uninitialized value access in the f2fs_sanity_check_node_footer function. This occurs when the system fails to read data from a device into a folio, potentially leading to information disclosure or system instability.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Memory
If the uninitialized pointer is used in a read operation, an attacker might be able to read sensitive portions of memory.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
If the uninitialized pointer references a memory location that is not accessible to the product, or points to a location that is "malformed" (such as NULL) or larger than expected by a read or write operation, then a crash may occur.
Integrity,Confidentiality,Availability
Technical Impact: Execute Unauthorized Code or Commands
If the uninitialized pointer is used in a function call, or points to unexpected data in a write operation, then code execution may be possible.
Frequently Asked Questions
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