CVE-2026-43433
Description
A flaw was found in the Linux kernel's rust_binder component. If a local process gains the ability to write to its own virtual memory area (VMA), it could exploit a time-of-check to time-of-use (TOCTOU) vulnerability. This allows the process to alter the offsets array during a transaction before it is read, potentially leading to a misinterpretation of the sender's data. In the worst case, this could enable the malicious process to escalate its privileges to that of the sender.
Understanding the Weakness (CWE)
Integrity,Other
Technical Impact: Alter Execution Logic; Unexpected State
The attacker can gain access to otherwise unauthorized resources.
Integrity,Other
Technical Impact: Modify Application Data; Modify Files or Directories; Modify Memory; Other
Race conditions such as this kind may be employed to gain read or write access to resources which are not normally readable or writable by the user in question.
Integrity,Other
Technical Impact: Other
The resource in question, or other resources (through the corrupted one), may be changed in undesirable ways by a malicious user.
Non-Repudiation
Technical Impact: Hide Activities
If a file or other resource is written in this method, as opposed to in a valid way, logging of the activity may not occur.
Non-Repudiation,Other
Technical Impact: Other
In some cases it may be possible to delete files a malicious user might not otherwise have access to, such as log files.
Other
Technical Impact: Unexpected State
The product may perform invalid actions when the resource is in an unexpected state.
Frequently Asked Questions
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