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MEDIUM

GHSA-qm2p-4w45-v2vr

grcov has an out of bounds write triggered by crafted coverage data

Details

Function `grcov::covdir::get_coverage` uses the `unsafe` function `get_unchecked_mut` without validating that the index is in bounds.

This results in memory corruption, and could potentially allow arbitrary code execution provided that an attacker can feed the tool crafted coverage data.

Are you affected?

Enter the version of the package you're using.

Affected packages

crates.io/grcov
Introduced in: 0Fixed in: 0.8.20

Upgrade grcov to 0.8.20 or newer (ecosystem crates.io).

References