CVE-2026-43435: rust_binder: fix oneway spam detection
In the Linux kernel, the following vulnerability has been resolved:
rustbinder: fix oneway spam detection
The spam detection logic in TreeRange was executed before the current request was inserted into the tree. So the new request was not being factored in the spam calculation. Fix this by moving the logic after the new range has been inserted.
Also, the detection logic for ArrayRange was missing altogether which meant large spamming transactions could get away without being detected. Fix this by implementing an equivalent lowonewayspace() in ArrayRange.
Note that I looked into centralizing this logic in RangeAllocator but iterating through 'state' and 'size' got a bit too complicated (for me) and I abandoned this effort.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43435?
CVE-2026-43435 has a medium severity rating of 5.5 according to the CVSS 3.1 metrics.
How do I fix CVE-2026-43435?
To fix CVE-2026-43435, apply the latest patch provided for the Linux kernel rust_binder.
What does CVE-2026-43435 affect?
CVE-2026-43435 affects the spam detection logic in the rust_binder component of the Linux kernel.
What is the impact of CVE-2026-43435?
CVE-2026-43435 could lead to Denial of Service due to improper spam detection in the Linux kernel.
When was CVE-2026-43435 published?
CVE-2026-43435 was published on May 8, 2026.