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ash: Reading on uninitialized memory may cause UB ( util::read_spv() ) #680

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Aug 22, 2021
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ash: Reading on uninitialized memory may cause UB ( util::read_spv() ) #680

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59f6126
Report 0098-ash to RustSec
JOE1994 Jan 25, 2021
951dd54
Add 'informational = unsound'
JOE1994 Apr 9, 2021
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19 changes: 19 additions & 0 deletions crates/ash/RUSTSEC-0000-0000.md
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```toml
[advisory]
id = "RUSTSEC-0000-0000"
package = "ash"
date = "2021-01-07"
url = "https://github.com/MaikKlein/ash/issues/354"
categories = ["memory-exposure"]
informational = "unsound"

[versions]
patched = []
```

# Reading on uninitialized memory may cause UB ( `util::read_spv()` )

Affected versions of this crate passes an uninitialized buffer to a user-provided `Read` implementation.

Arbitrary `Read` implementations can read from the uninitialized buffer (memory exposure) and also can return incorrect number of bytes written to the buffer.
Reading from uninitialized memory produces undefined values that can quickly invoke undefined behavior.