rust_binder: fix oneway spam detection

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Summary

CVECVE-2026-43435
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-08 15:16:55 UTC
Updated2026-05-12 14:10:27 UTC
DescriptionIn 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.

Risk And Classification

EPSS: 0.000170000 probability, percentile 0.041320000 (date 2026-05-12)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected eafedbc7c050c44744fbdf80bdf3315e860b7513 edf685946c4acbe57cb96f8d5f3c07e9a2e973c8 git Not specified
CNA Linux Linux affected eafedbc7c050c44744fbdf80bdf3315e860b7513 8d34c993a9a156e657e43cb95186980745cc3597 git Not specified
CNA Linux Linux affected eafedbc7c050c44744fbdf80bdf3315e860b7513 4fc87c240b8f30e22b7ebaae29d57105589e1c0b git Not specified
CNA Linux Linux affected 6.18 Not specified
CNA Linux Linux unaffected 6.18 semver Not specified
CNA Linux Linux unaffected 6.18.19 6.18.* semver Not specified
CNA Linux Linux unaffected 6.19.9 6.19.* semver Not specified
CNA Linux Linux unaffected 7.0 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/4fc87c240b8f30e22b7ebaae29d57105589e1c0b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8d34c993a9a156e657e43cb95186980745cc3597 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/edf685946c4acbe57cb96f8d5f3c07e9a2e973c8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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