Linux Kernel rust_binder Oneway Spam Detection Fix
CVE-2026-43435 Published on May 8, 2026
rust_binder: fix oneway spam detection
In the Linux kernel, the following vulnerability has been resolved:
rust_binder: 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 low_oneway_space() 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.
Products Associated with CVE-2026-43435
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Affected Versions
Linux:- Version eafedbc7c050c44744fbdf80bdf3315e860b7513 and below edf685946c4acbe57cb96f8d5f3c07e9a2e973c8 is affected.
- Version eafedbc7c050c44744fbdf80bdf3315e860b7513 and below 8d34c993a9a156e657e43cb95186980745cc3597 is affected.
- Version eafedbc7c050c44744fbdf80bdf3315e860b7513 and below 4fc87c240b8f30e22b7ebaae29d57105589e1c0b is affected.
- Version 6.18 is affected.
- Before 6.18 is unaffected.
- Version 6.18.19, <= 6.18.* is unaffected.
- Version 6.19.9, <= 6.19.* is unaffected.
- Version 7.0, <= * is unaffected.