Fix use-after-free and double-free in RemoveFilament (3.27.x) - #6368
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RemoveFilament() frees `filament` (and destroys filament->items) when StringSetSize(filament->items) == 0, but had no `return` after that branch -- every other early-exit branch in this function does. Execution fell through unconditionally to `OpenDB(&db, filament->db_id)`, a use-after-free read of the just-freed filament, and at the end of the function `StringSetDestroy(filament->items)` / `free(filament)` ran again unconditionally -- a double-free of both filament and its items set on that path. Verified with a standalone AddressSanitizer repro (RemoveFilament's body extracted verbatim, stub types matching the real DBFilament/StringSet shapes): unfixed, ASan reports a real heap-use-after-free at the OpenDB(&db, filament->db_id) line; with this one-line `return;` added (matching every other early-exit branch's own pattern in this file), clean. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> (cherry picked from commit aecc166)
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@cf-bottom Jenkins please :) |
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Sure, I triggered a build: Jenkins: https://ci.cfengine.com/job/pr-pipeline/14698/ Packages: http://buildcache.cfengine.com/packages/testing-pr/jenkins-pr-pipeline-14698/ |
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Backported from #6358