GNU bug report logs - #47542
rust-stackvector package is vulnerable to CVE-2021-29939

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Package: guix;

Reported by: Léo Le Bouter <lle-bout <at> zaclys.net>

Date: Thu, 1 Apr 2021 13:48:02 UTC

Severity: normal

Tags: fixed, security

Done: zimoun <zimon.toutoune <at> gmail.com>

Bug is archived. No further changes may be made.

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From: Léo Le Bouter <lle-bout <at> zaclys.net>
To: 47542 <at> debbugs.gnu.org
Subject: bug#47542: rust-stackvector package is vulnerable to CVE-2021-29939
Date: Thu, 01 Apr 2021 15:47:51 +0200

[Message part 1 (text/plain, inline)]
CVE-2021-29939	07:15
An issue was discovered in the stackvector crate through 2021-02-19 for
Rust. There is an out-of-bounds write in StackVec::extend if size_hint
provides certain anomalous data.

No fix released upstream yet: 
https://github.com/Alexhuszagh/rust-stackvector/issues/2

Out of bounds write sounds like it could have dangerous consequences,
not sure how likely is "size_hint provides certain anomalous data"
though.

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