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26 lines
963 B
Markdown
26 lines
963 B
Markdown
```toml
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[advisory]
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id = "RUSTSEC-2019-0009"
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package = "smallvec"
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aliases = ["CVE-2019-15551", "GHSA-mm7v-vpv8-xfc3"]
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cvss = "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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date = "2019-06-06"
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keywords = ["double free", "use after free", "arbitrary code execution"]
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url = "https://github.com/servo/rust-smallvec/issues/148"
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[affected.functions]
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"smallvec::SmallVec::grow" = ["< 0.6.10, >= 0.6.5"]
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[versions]
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patched = [">= 0.6.10"]
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unaffected = ["< 0.6.5"]
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```
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# Double-free and use-after-free in SmallVec::grow()
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Attempting to call `grow` on a spilled SmallVec with a value equal to the current capacity causes it to free the existing data. This performs a double free immediately and may lead to use-after-free on subsequent accesses to the SmallVec contents.
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An attacker that controls the value passed to `grow` may exploit this flaw to obtain memory contents or gain remote code execution.
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Credits to @ehuss for discovering, reporting and fixing the bug.
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